One thing I like about the current books is how they blurred the lines set by the old cartoon and toy bio continuity.
The separating of Galvatron from Megatron by making them entirely different characters opened up a lot of possibilities...plus who'd have thought Cyclonus could be such a compelling antihero
Really want Sixshot to return in Dark Cybertron though. Probably my favorite of the overpowered Phase Six subgroup.
There's been so many diverse pieces seeded that the possibilities for future world building are massive. It no longer feels like a toy ad.