Sorry I didn't mean to imply that people would be prevented from posting in in either section, I just assumed that advanced players would continue to give ideas / advice where appropriate to players in the casual section, and therefore be posting in both sections, but that casual players would be naturally reluctant to post in the advanced section, unless they had something relevant to say.
a major reason for your proposal, if i'm reading it right, is that you and others have limited time to read the forums. that is indeed true. but, it also applies to those that you're assuming would help out in the casual section but not really learn anything there themselves. if the division is sharper and easy to tell before entering a forum at all, those "experts" (for lack of a better term) might not read the lower-level forum. they'd never stumble upon a post and reply with great advice like they do now. so i really wouldn't bet that your assumption would work out as well as you hope.
i'm coming at this with a bias from when i used to play WoW. i raided a lot a bit more than a year ago, but i was in a casual guild. we didn't have purely level 60s in it, to raid we had to group up with other guilds. because our own guild varied so much in levels, no matter which character we were playing, we had guildchat to talk in. we had people brand new to the game who learned a lot from those who'd been around a while, and i'd learn things all the time even from people 1/4 my level. some guilds in WoW are set up hard-core, only level 60s are allowed to join (well, 70 now i guess but whatever). all lower-level alts are in a different guild. that means those people aren't available on guildchat at all when playing their 60s. even when they're not busy raiding, they're just sitting around the auctionhouse with plenty of time to talk, the avenue is missing. they can only share their knowledge with the lower-levels when they're logged on as an alt.
CFC is set up like a casual guild now, not a hard-core raiding guild. i like it that way.
i'm also biased relative to the last line i quoted. "casual players would be naturally reluctant to post in the advanced section, unless they had something relevant to say." i don't have a natural reluctance to post when i don't have anything relevant to say. added bonus, i ask questions a lot, even if i know they'll sound dumb, because i'm not ashamed of my permanoob status. if i had a GPP for every CFC member i've annoyed that way, i could probably live in a permanent golden age

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