you left out "willing to raid for 5-6+ hours every day. On live and PTR. With alts, as well. Knowing more than one class and role well probably helps too.
Just knowing the basics of multiple classes/roles is a recommendation for anyone who raids. Knowing what others can do is sometimes a godsend. (You'd be amazed at how many times I get told, "Monks can res people? I didn't know that!") Plus, knowing other classes can sometimes help, especially if you've got a newer player in your group. LFR doesn't exactly promote knowing your rotation/priority, and stepping up to "real" raids (be it 10 or 25 man) requires one to do their best. Perhaps a bit more so with 10.
Anything that'll get random pally #5468 who is at least nice enough to buff me in passing, but I can cast the equivalent of kings on myself, give me might for goodness' sake.
When the ship lifts, all bills are paid. No regrets.