Skill based is a good way to put and avoids the tendency these days to throw "competitive" around as a general buzz word for "something good" which means nothing in the context it's often used. oh, and I'd also suggest that as well as letting the players sort out their own metagames they should start off with a base philosophy for it, like LC's base ruleset which I made for said metagame. It can be overruled by votes, but is generally not to be questioned unless there is severely exceptional reason to do so (some people thought Rotom formes/evolution counted as this and we held a vote, rotom lost). Ubers base philosophy is likely to be no bans, or at least no Pokemon bans (though I could be wrong, depending on what the players want), and this could only be questioned if something utterly beyond reason comes up (which Arceus may, but is a long way from being that from what I've seen). Oh, and to clarify, I don't mean Smogon's PO. The standard PO server has Ubers as a no bans land.