I know you got a lot on your plate doing this but is it possible to eventually change the UI to a more Diablo-esque appearance? Like health/mana bar would be the spheres filled with blood/blue liquid stuff, the item slots could change more to the "potion slots" area and such. Now that I think about it, this would open up more space for seeing things than the UI atm. The map and character interface would be in the same area obv but everything would be lowered by about half of what they are now, exception being the spheres.
Also, ever tried minion skinning? It would be interesting to see Fallens as the melee, Fallen Shamans as the casters, though I am not sure what the catapults and super minions would entail. Granted I know you can't make exact replicas but something similar would be fairly epic.
Besides that little idea, I love the skins and eagerly look forward to a map skin. +1