Alright, I know you have bigger and better and cooler stuff to work on nib. But I suggest dumb stuff all the time!
So here we go.
Would you ever advanced the tooltip to show powerbars? Ability to add text to them.. ? itemlevel too? Option to hide the powerbars and only show health. I also have it to where you can hover over someone in a raid and see what raid spec they are only in raids so like healer and so on. Excluding dps.
Also adding icons on the tooltip for items.
I was messing around with freebtip for awhile in about an hour this is what I came up with.