By ~2 bars, you're referring to ~24 keybinds?
I mean today, I've got what, 3 bars including some non-class stuff like mounts/healthstones/potions on my DK, warrior, paladin, and monk tanks, with some some seldom used stuff bound to a 3-6 slice opie ring keybind. (Elusive brew, Dark Simul, stuff that's handy to have but not needed in every or even most encounters.)