Finally built my Sherman IRL. As soon as it was together I took it apart!! I do not like the way the front end was. Everyone uses it, but I don't like it. Way to flimsy. I re-made the front end out of BRICKS. Go figure. The slope/angle still matches the Sherman's front end. And it is waaayyy stronger!! Already ordered the slopes and extra plates. Re-worked the suspension to pretty much the standard LEGO community suspension. I like it, no more gaps in the bottom, no big spaces, the rainbow WIP was dropped on the floor and DID NOT fall apart. So it is basically Austin-proof!! :) Plus I added a LEGO .50cal.
Credit to Project Azazel for the idea of the 9-wide Sherman, and some of the features.