What about the fishing competitions in WoW? You could say that it's not a solid bet, but I know more than one person that kept their account activated for the s

What about the fishing competitions in WoW? You could say that it's not a solid bet, but I know more than one person that kept their account activated for the sole purpose of logging in on Sunday mornings to fish and nothing more. Same with those who would only raid 2-3 evenings a week, get their gear or a boss/dungeon achievement and log. I believe there are ways to cater to casuals while still keeping the achievements unique.