Regarding Wardrobe... What I really use it for is to have different gear sets which I use keybinds to access, I never ever use the drop down menu. kp1 is default/healing, kp2 tanking, kp3 soloing, kp4 regen and kp5 fishing... :)
I guess I will have a closer look on ItemRack, but in all honesty Wardrobe is working well enough to make me not really have any urge to switch from it, I'm using the non-sea version that was linked from the comments for it on curse, and together with timex of course.
And yes, I too would love to switch from CooldownCount, but looking at the alternatives.... Well there isn't many imo.
CooldownCount, well I guess I don't really have any good arguments for it, but instantly not knowing how much time my Natures Swiftness has left on it's cooldown I found to be extremely annoying, as one example.
ItemsRack, I was under the impression that you had to switch each item "manually" in that, no full gear swap using one button?
SCT I mainly like for telling me when I get OOC as well as if my prowl breaks, since that may happen under not too clear circumstances, agreed on the health not beeing all too important although it does give you a clue on wich strategy you have to take depending on if you made a nice crit or not. At least that's what I use it for.
MobHealth... Well percentages just doesn't cut it imo, I could do with an estimated "blizz" value, maybe percentage relative to my own HP. But 85% could be 1000HP and 5000HP for all I know.
And QuickCalc.. It's a game based on mathematics! A calculator is essential, in every way, imo :)