Vamos rewrite -- ideas?

[joevenzon]

I'm planning to, as part of the VDrift code refactor mentioned on the front page, rewrite vamos. My main goals are to improve code clarity, cleanup any hacks I've made to the code, convert all rotational code to use quaternions, change the numerical integration method to use a symplectic Euler integrator, and decouple the car physics from file loading/rendering/etc.

However, I'll also have a chance to make tweaks to the way Vamos currently works. There was a good discussion about the Vamos suspension model here:
http://vdrift.net/Forum/viewtopic.php?t=926

Any ideas/requests for improvements on Vamos?