Bumblebee is braver than Megatron so don't rule him out

There's some good ideas there. I have developed some similar rules for a computer game I might never finish. In doing so I used the tech specs as a start but adjusted them to give every character a fighting chance against every other character. I don't know anything about the games the rest of you are talking about so I'm not sure if they'd translate.

But I couldn't work out a good way to give each character two sets of stats for robot and alt mode, so I incoporated transforming into certain moves. Eg Autobot cars transform into vehicle mode to attack with their speed stats.