Remove the portraits; they do nothing for your group on your main. You know your Shamans are Draenei, you know your Paladin is Draenei, so the only thing the portraits might help you with is targets and that's only if you are fighting vastly different-looking mobs.

Turn off Quartz's buff tracking: it's redundant and can be easily tracked through your own buff (buff yourself first, then refresh all buffs as yours starts to tick down).

Other than that it comes down to choice of textures: I despise the default textures Pitbull loads so I have to change them to something flatter. Everything else looks good to me. Perhaps I would hide the system bars on the alts, but that's minor, I think.