I can't remember what the round I fired was, but I think it was .44 Rem Mag WW Super(is that right?). Anyway, I was really impressed with that in a handgun, and I think it would be an excellent semi-auto carbine round for deer hunting. Thing has almost as much powder as a .308, but has more typically handgun round traits, so it's a good tradeoff of killing power and safe range limitations...
I'd also like to see an AK type weapon, or something similar to the Galil/M96 chambered for 6mm PPC, or a very similar round that can fit in AK mags.
I'd like to see that same round put into a SAW, and then of course to own that.
What I want more than any gun though, is to see that evil mag restriction BS "law", that Bill Ruger helped betray us with, repealed or expire..