I see what you mean now -.-
I thought you meant to seperate servers into a different groups, and players of that group could only play on their respective servers. Like, high-skilled can only play on high servers, medium-skill on medium and high, low-skilled on all three. That was veering towards a MW2-style matchmaker, something I know a lot of people hate.
So yeah...in a perfect world, that'd be an excellent idea. We can all hope, eh?