It'd easy enough to not have ratings for lessor played variants, or lump them together with simular games. As for fellowships and tournaments, how would that matter or be an objection? You couldn't have either if no one joined your game, so it'd not be a problem.
I'm just saying that it'd be nice to play any game that could be played without having to have a seperate program and category for it.

Or if it's necessary for each variant to have its own management of ratings, tournaments, and fellowships, so? Don't join them unless you want to. I'm not a member of any fellowship, and I only join a tournament that I have an interest in. Same thing for individual games in public waiting area. If you don't like a version, you don't play. Just as it is now. How does that take away from your game playing experience?