I think most Rift haters will love the new Eruption mode. Also the Rift lovers would probably like to play Rift now I guess. So what about Iron Banner swapping the modes each time it comes around? That way people can look forward to something and plan their free-time accordingly for that very week. Lovers of both modes (like me) can play anyways the entire season. Sounds to me like a win-win-win situation.