Megatron isn’t necessarily “bigger” going between the two states. Include that with the radical color change and it’s just asking for a mess.
I was initially excited about the Optimal Optimus, but the execution on that figure is so mediocre I couldn’t even consider it. At least with Prime and Rodimus the smaller figure turns into something related to the original figure. A vestigial surfboard? HasTakTomy knows they could have done better. The best thing that figure did was allow for the SDCC repaint to be a thing. I will be picking up the Perfect Effect Gorira in that layout.
Prime and Hot Rod are “OK”. I honestly felt that Prime could have been a true Powermaster Prime given that the cab transforms and you take the trailer and make the bigger robot. I know they did a Powermaster for Titans Return, but that hasn’t stopped them from making a Prime between lines before.
WFC Siege is a step in the right direction for the brand. Outside of the battle damage, it’s basically taking classics back to the days of old. I swore off of them, but they are tempting.