The '07 movie was magical at the time. The first time ever seeing our favorite robot friends in live action. I personally love Sam's family. I liked the hacker subplot with Anthony Anderson. I liked the army group escaping a destroyed base subplot. I liked the Barricade/Frenzy tracking down the Allspark subplot. I liked the Sector 7 subplot. In other words, I really enjoyed this movie.
RotF was a great visual experience. This is the one where the acting started to tank a bit. I'm sure the writer's strike was a good chunk of it as it showed that Michael Bay might be good at visualizing a movie, but not good at writing a cohesive one. RotF was basically some cool little short films stitched together to try to make a full length movie.
DotM I thought went back to some of the excitement of the first film. I thought the writing was much better. The story was much improved over RotF and the Siege of Chicago sequence was probably the best sequence in ANY of the TF live action films.
AoE was not well written and certainly not well acted (except for Stanley and Kelsey). It has some visually stunning sequences, but the story was not compelling.
TLK was just bad.
Bumblebee was VERY good. I think it was one of the best written of any of the live action movies.
I still haven't seen RotB yet. I need to get around to watching it since it is on Paramount+.
TFOne just hit all the right buttons with me. I've always loved this kind of CGI animation style so that already was a plus going into it. Then, add on there, this one was well written, well acted, and well animated. This is exactly the kind of Transformers movie I had been wanting for a while.
The setup for the 2007 movie was a good one, I think. One central character, a number of subplots that each contribute something toward discovering this alien arrival/threat. The execution fumbled them some, but the idea was solid -- soldiers discover unstoppable humanoid war-weapons and learn how to damage them. Hackers discover bits and pieces about Project Iceman and Sector 7 (but, as Sabrblade notes, this could have been made more substantial). Meanwhile, the unassuming boy and his car get introduced to the car's friends in a mind-blowing sequence set to incredible music. It's the one I'm most forgiving of since it's from a messy time in contemporary franchise-adaptation history (love it or hate it, but the MCU has at least helped codify a formula for a decent 'modern' adaptation movie). Could have used more character fleshing-out, but the alien-ness and slow-burn reveal is the better move here (alas, the characters wouldn't really get more good development later on). It does kind of lose its way and just distract you with a big final battle, which gets it by, but sadly becomes the template for every film after.
ROTF was a violent, striking disappointment. At the time my own anticipation for ROTF was at a fever pitch, more for the lore building than anything. This was a whole new continuity they'd just broken ground on, and there was so much that was possible. The first movie left us with a core team of Autobots on Earth, Optimus putting out the call, and the Decepticons in need of rallying. I didn't even want to buy into the The Fallen stuff at first -- they could just as easily have it be a Megatron revival and revenge story, their Empire Strikes Back, with Prime dying at the end. It was tantalizingly promising, and then... it wasn't. In a season full of such examples, it was a landmark piece of evidence that you shouldn't force a movie together during a writer's strike, solely driven by the willpower of a director with no small amount of skill but also very truly derailing tendencies.
DOTM had a few interesting hooks, but the execution was becoming MUCH more transparently theme-park-ride in nature -- just think of two or three big sequences with explosions and screaming, and then excuse-plot them together. The Chicago siege is exhausting because stuff just keeps happening to keep stuff happening. But the movie in general has a lot going for it. Some of Sam's journey, the Sentinel/Optimus arc, the moon landing being tied into the Ark crash, the Autobots working to keep putting down pockets of Decepticon dissent (and the Wreckers), the bold takeover of a CITY. In the end it's between the first two movies (not that it's hard to out-decent ROTF), although it could have done better to wrap up the first trilogy.
In general, the live-action movies are a great grab bag of fun or cool ideas that would make for a great viewing experience, let down by an apparent refusal to WRITE something of substance that ties all that together.
I wanted to like AOE, and again there are some intriguing possibilities there. Redoing the "first encounter with Cybertronians" in a post-Chicago world, with a dad who's also a tech guy, and there's a race car driver, each of whom would be a perfect foil for a Transformer partner? Lots of good things that could come of it then did not because they spent more time researching the Romeo and Juliet Law. This movie is littered with concepts and features I wanted so badly to amount to something. Ancient knights! (And Kre-O even cued Silver Knight and Gold Knight Optimus!) Freakin'
Lockdown! Kelsey Grammer AND Stanley Tucci! In the end the villain portrayals (Lockdown included) were the best thing about this movie, and everything else was terrible except for Drift staring agog at Grimlock and saying "I was expecting a giant car". Much less to redeem this, since even the Autobots were generally unlikable (Crosshairs in the movie trailer? Cool parachuting shooty guy. Crosshairs in the movie? Just the latest in a line of smug assholes that the writers did NOT have the talent level necessary to make interesting.)
TLK, well. You could smell the "we need to kill this franchise to save it" energy all over it, with it feeling the most dispassionately-made and rudderless of the five. This was a mix of undercooked ideas (the weird retcon of Transformers always having worked with humans, and oh they were in WW2; Quintessa and the creators; Unicron; an extended Suicide Squad intro for nobodies we didn't and wouldn't care about), recycled sequences (a space jet chase/shootout akin to the one from AOE, a chase into and out of a building to kill time) and padding (take this car, take this submarine, replace Chicago with floating island thing). I remember a surprisingly minimal amount of sexualization (well, compared to everything else) paired with a lot more swearing than usual, but generally I just couldn't get into the movie at all.
Bumblebee was a real breath of fresh air, and honestly I might have preferred it to come in like a year later to really create some separation. But this was when everything was being hamstrung by indecision about whether to fully reboot or not. I loved how the first trailer or preview I saw (not sure which one it was) didn't even indicate it was a Transformers thing until like halfway through the thing, where Charlie witnesses him transforming. I did not love that the fanservice brought predictable fan behavior out of the woodwork, with all the "see, they finally gave in and Geewun'd everything, this should have always been how they did it". (The designs weren't consistently appealing even aside from that -- for some reason the legs are always the weirdest bits, from Prime to Shockwave to Soundwave -- and the toys show how altmodes weren't even much of a consideration for most of them.) Thankfully my attention was drawn to other corners of the fandom (and
official material) who embraced the wholesome Bumblebee/Charlie dynamic.
BUT the movie, well. It was just what I needed to see from Transformers at the time I needed to see it. Always liked Hailee Steinfeld, and she gave the franchise a lot of credibility with a very moving performance, and it was nice to have a charismatic, affecting female lead not be sexualized to hell and back. Sadly, everyone else in the film is largely unremarkable (although it could have used more of Cena). But I was drawn in to the emotional stakes more than I expected to be, and the Iron Giant-esque heart and sincerity of it was exactly what the live-action movies needed.
It's a shame this was largely missing from ROTB, which tried too soon to go big again.