Here's the deal....I've had other people ask about certain frame modifications and I had to tell them no because of rule number 3...
3. Must use factory frame....no altering of original frame structure.
(grinding off fender tabs and cutting seat tube height is okay, just no major frame design changes).
So if I want to stay consistent and not upset all of the others that I had to say no to I'd have to say no here too.
Now...do I really care if you cut off the cantilevers on the frame?.....no. Do I think that tweak is going to give you an edge over all of the other bikes, probably not.
This really all comes down to what the rule states and whether or not we want to stick to them.