there is a discussion thread for this???...interesting...well, I remember PokemonPlay saying something about rotating four sets per year now..."as they feel, it will be the best choice to keep a healthy competitive environment"...and if they keep to what they said at the advent of last year's rotation, that would leave it RR-on, which makes for a pretty balanced metagame
as we all know (or should), Japan has new base rules due to Black & White, these rules make it much harder for early evolving...if we adopt those rules when B&W comes out, SP's will go back to being an overly dominate force in the metagame...and after 2 years of (almost brokenly) unbalanced SP decks running around, I'm ready for a change
ChairmanKaga (pokegym), believes we will be adopting the B&W rules when the set releases, I certainly hope not...but if we do, I would much rather go to a HGSS-on format, just because that will completely eliminate SP's and make it so there won't be any crazy high hp basics running around to donk with