Interesting...I agree, if you have similar needs in mind, going with something NOT off the shelf is gonna have to happen.

For those of you that want custom, but have no need/want for coilovers, check this shop out; they have a ton of interesting videos on YouTube:
http://www.fatcatmotorsports.com/index.htm#page-top

Other than reading good reviews on some of the other boards, I have no experience with them, but it certainly opens up an overlooked option.