Well, simple answer, we don't know. Real answer, there are a few people who can tell you, the rest of us can make some guesses based on past trends. Based on these trends we can say they are legal. They may or may not be optimal but they are a legitimate way of quickly building a robot.
I also ask that we NOT get into the debate on whether they are "in the spirit of FIRST" this has been discussed so many times I think everyone is just plain sick of hearing the arguments.
What I think is nifty, 221 is partnering with AM. I don't know why I didn't notice that when I was on the site not 10 minutes before checking here. Great, now I can get stuff made by my second favorite people whose names start with An (they tied, but they lost to me

)
EDIT: The chassis is legal under previous rules, it is merely a collection of disassembled parts. This was discussed rather extensively in the threads for Team 221's Chassis.
http://www.chiefdelphi.com/forums/sh...89&postcount=9 Took me long enough to find that. I really need to start bookmarking these.