We need a tool that:
images/syncs 30+ iPads at once (100 at once would be good)
www.bretford.com/apple have solutions that will allow you to connect 30 ipads to a mac via a single cable. it just won't solve the problem that you need to register/configure each of those 30 ipads individually.
having said that, since it's possible to have the devices available simultaneously over the same USB cable, then someone could write a 3rd party (non iTunes) tool to do what you need. Yes, Apple should be that someone.
I once stumbled across http://www.apple.com/ipad/business/integration/ that seemed to have APIs etc for wireless deployment of iPads but wasn't in an environment to try it so I didn't bother looking to see how much is possible with the tools Apple offers to enterprises.