Light body type for me. I know you know why trickjumping is awesome; stuff like strafe jumping and ramping offers a skill-based movement advantage that requires some brain-processing time which is really quite fun when it interacts and intersects with combat skills.
Gameplay with trickjumping is more involving than gameplay without. Anything that enhances that involvement by giving me more movement options, be it more stamina, better jumps or faster movement or whatever is going to catch my interest.
You could add all the extra HP and energy and whatever passive stuff you like to other body types and you’d still not tempt me to play a slower character:
If you leave it so that the movement advantage that extra skill with the faster movement provides is more effective than the other body-types’ passive boosts, there’s no reason for me to take anything other than light, because I don’t mind putting in the effort.
If you add so much passive advantage to the other body types to give them an even footing with the light body type, you might as well give everyone Halo-spread on their guns and autoaim so we all act as chauffeurs for a RNG.
If it was the latter, where I have to display continuous skill just to compete with a passive autobuff, I’d probably wait for a mod to remove the body-type thing entirely, or just not play at all. That’s not so much a ragequit, as much the fact that I find passive silliness incredibly dull.
The moment that skill stops being the deciding factor I lose interest. The only thing that’s going to potentially tempt me to some other body type are active skill-based advantages like trickjumping. I can’t think of anything that would fit that criteria, but it’s the only way I see this body type thing working at all.