This makes me mad at Fujimi!
The Avs model 7's can be fixed with a slight deep dish treatment like a did but I don't think the Rg's can. See here, the Avs model 7's look IMO much better than they did.
Maybe a litle modifying of the wheels can help, it's better than building from scratch.
But I wish Aoshima took the advantage of these crappy wheels and started produucing their own Rg's again.