[Ghazban]

I support a division of:
-- smaller than 1/2 online, 1/2 and smaller live
-- 1/2 to 3/6 (or 5/10, arguments could be made for either) online, 2/5-ish (and 5/5?) live
-- everything higher

Particularly deep and/or tricky hands at any level would probably not be rejected outright if posted in this next higher up forum (eg. a .25/.50 online hand with $300 stacks and a history between the players would be fine in the middle forum, a 2/5 live hand with $2000 stacks and some tough decisions would be fine in the high forum).