When you submit your findings, please also add the following:

A proposed rule that allows what you want but also does NOT allow any additional stucutural enhancement to the chassis other than what is already permitted in the ITCS...

THAT is the issue. Write it so that it won't be abused and so that it can't have unintended consequenses. If you find that impossible, it might just not be a good idea barring any other issues weighing on the 'need'.