Hmmm...I know I seem to do this a bit, but making Wc3 into WoW is actually quite fun. I can see why you started this mod, Craka. I was fiddelin' around with my Money map one day, and for kicks made a paladin with a custom targeting system. When a unit is targeted, it displays a "WoW-like" (I put quotations around it because it's ugly) selection circle. You are always selected on your paladin, so your abilities are always within reach. If you use an offensive ability, it automatically casts on your "target unit."
Ideally it'd be possible to have 2 or 3 spellbooks with less-used abilities, like Blessings, Auras, and long Cooldowns, and the main interface with the combat abilities, like Seals, Heals and...(keels? Ooo...needed something to ryhme). I use the hero icons in the top left to display your targeted unit. Sadly, I couldn't find a way to display an enemies' icon, short of making them all heroes, so I had to resort to little plus symbols for everyone.
It's actually kinda fun. Hope it can be useful, you guys seemed swamped as of late.