Transformation- The game, while providing a transformation example in the form of a magical girl, doesn't automatically assume that kind of transformation is the only kind one would want. Assuming that one could add "weapon" as part of the transformation portfolio, this would also be wonderful for Tekkaman-style games (I've already done some statting in that respect.)
Power moves/weapons: Ease of customization and simple math are always a plus.
Ground Zero CGen- Well, it fits all right. The more screwed up a character is, the more powerful he/she tends to be.

Power moves/magic- All special attacks cost something. I used to be able to make absolute monsters with ease in BESM, but this makes characters work harder for powers.
I haven't played around that much with vehicle rules yet, but I'll put up how it goes when I try to create a Dalek.