I agree, I think Silva should move up in weight, but eventually. I would still like to see him in a couple fights at 185. Possibly if St Pierre moves up, or outside of UFC with Lindland (because of the interestng style match-up) or Frank Shamrock. Though these are highly unlikely, especially since Frank and Matt will never be in the UFC.
There's no way he can make the cut to a lower weight class but he could move up in weight since yah, he walks around at a lot heavier weight. I don't think being heavier would really take that much away from him, he'd have more power in his punches and his technique is good enough so that I doubt he'll lose much of the basics in speed etc. And really, say if he was originally fighting at 205 and moved down to 185, people would be criticizing the move down a lot more than they would now, if he moved up in weight.
What boggles me is after the fight with Dan Henderson, people were saying that Rich Franklin did better against Silva than Dan did. Correct me if I'm wrong but didn't Dan win the first round of the fight where Rich Franklin did nothing, and got destroyed. :Smug: