I agree about the transformation. This is one of the most annoying cases of partsforming I've ever seen, because it's a design that worked in the first place. They took something that already worked and found a new way to make it not work. The new proportions are beautiful, but if they made it impossible to keep the original transformation then I'm not sure they're worth it.
The loss of all the original gimmicks also really sucks. I always considered them part of what made Tidal Wave such a seemingly good fit for Titan Class. At this size Ramjet wouldn't even need to fold up to fit in the elevator. Instead it's all just gone. Even if they do release a Ramjet separately, what's the point?
It's big, beautiful, but boring.
The loss of all the original gimmicks also really sucks.
See also Legacy Armada Megatron. Slightly smaller, lost all its gimmicks- including Mini-Con hardpoints (and therefore 90% of its play value), but has knees.
Disappointing.