Bumping this thread because I just thought of something.
Remember back when I wrote this:
The thing about Alpha Trion being a member of the Thirteen is that he originally really wasn't supposed to be. Back when Furman first created the concept for Dreamwave (and first introduced it in The Ultimate Guide), the Thirteen were supposed to be so ancient and so mythological that all of them were supposed to no longer exist anymore by the present day (all except for The Fallen, whose unique circumstance of having been sealed away as punishment for siding with Unicron enabled him to resurface in the present as seen in War Within: The Dark Ages). Alpha Trion was written as being alive during the present time of the Dreamwave comics, and while he was depicted as old and tied to Vector Sigma as its guardian, he was but one of the oldest of the current living population of Cybertron, while the Thirteen were so distantly prehistoric that their mere existence had become but a fable. He was more like one generation after that of the Thirteen, one of the first normal Cybertronians rather than one of the first demigod ones.
Well, I got to thinking more about how Alpha Trion wasn't supposed to be one of the Thirteen, and realized something else that's currently true about the Thirteen but likewise wasn't originally the case.
Lord GigaIce actually brought it up here before, too:
Another thing that bugged me about the Thirteen is that they wanted them all to be "Primes" but some just didn't have the title. Alpha Trion and Liege Maximo are Primes but didn't rep the title? Why not? Hell, Dreamwave canonized "Alpha Prime" as a thing...
It just bugged me. At the time same dropping the idea that they're all "Primes" and just having Prima himself start that lineage would be a cool idea. Make the rest gods/demigods who don't have the "Prime" title?
And that's just it. The Thirteen originally
weren't supposed to all be Primes.
Looking at those who were first said to be among the "Thirteen Original Transformers" in The Ultimate Guide, there was Prima and The Fallen who were confirmed as such, Liege Maximo who was said to have been intended to be one (but at the time, "Alignment" was the sole publication that confirmed it, yet it wasn't official), and Maccadam was rumored to be one by his drunken patrons. And of those four, none of them have "Prime" in their name. Well, Prima could
technically be considered one, but like LordGigaIce said, it was likely that the title of "Prime" was simply named in honor of Prima, as the official list of Matrix-bearing Primes in the first volume of Dreamwave's MTMTE profile books did not include Prima himself.
But you know what that list did include? "Alpha Prime". Nothing is ever given about this guy in anything Dreamwave ever published, while an Ask Vector Prime answer published in The AllSpark Almanac II book simply attributed the name as a title for Primon, the first Matrix-bearer in Furman's original BotCon fiction. But what if the name "Alpha Prime" was originally meant to indicate that he was none other than Alpha Trion himself? As in, what if Alpha Trion had been the first Matrix-bearer in Dreamwave G1 and went by the name "Alpha Prime" during that time, and only went by "Alpha Trion" after having retired and passed the Matrix to its next bearer, Guardian Prime? The G1 cartoon indicated that that version of Alpha Trion safeguarded the Matrix until it was passed to Optimus Prime, but never suggested A3 had been a Matrix-bearer himself. The Dreamwave comics could have easily made their version of A3 be a former Matrix-bearer in homage to his taking temporary ownership of it in the cartoon. He even served as a mentor to the lineage of Primes; who better to do so than the guy who was first in line?
And with that notion in mind, Alpha Trion having once been a Prime in Dreamwave G1 but not one of the Thirteen would further show that the Thirteen weren't originally supposed to have been Primes, either. So how did it end up happening that all of the Thirteen were Primes? Well, I'm pretty sure it happened when Vector Prime came about for the Cybertron series. He had "Prime" in his name despite not being a Matrix-bearer (and even had it in the original Japanese version of Galaxy Force, in which Optimus Prime was named "Galaxy Convoy" while Vector was still "Vector Prime"), and the Fun Pub Cybertron comics written by Forest Lee were the first to establish the notion of all Thirteen being Primes.
Then, Revenge of the Fallen doubled down on the notion of all of them being Primes (while decreasing the number from thirteen to seven), and then we got Nexus Prime as another Prime-named member, and the rest was history.
There were so many developments from other parties that just overrode the original creative vision for the group.