after playing at Waterbury where Rich's deck was only a few cards off from many netdecked decks, I believe we have reached a geniunely diverse metagame
I don't think you can defensibly argue that the few card difference in Rich's deck had nearly as much to do with it winning than the fact that it was piloted by Rich Shay. I don't mean to undermine your point, I just think its a misleading example.
That said, there are more opportunities out there for some revolutionary discovery in Vintage than anywhere else because of cardpool. Finding those gems is what we are all looking for.
I agree. Sure, the bar is set pretty high for the power level of decks/cards. However, I think there are plenty of extremely powerful synergies that haven't been dug up yet because of institutional 'knowledge' about what is good in this format.
I think we've come a long ways, but I think there's plenty of work left to do.
He told me that most of time in Constructed 90% of the decklist can be made by an devised by any savvy player, but that the last 5-10% of the deck, which determines most of the deck's success, is found through playtesting. I think this logic has finally worked its way into Vintage.
I think this has been true in Vintage for a long time. I think its becoming clear to more people because of quality articles and things like this site, which spread a better understanding of the metagame and what it takes to win.
However, I think an even larger factor in success, which hasn't 'caught on' in Vintage is a dedication to improving playskill. It should be obvious why Rich and Carl are always in the top seats at Waterbury (likewise Thorme and Kevin at GenCon).