Ah, you see the pattern! Yes, Usara Master Wizard is coming as soon as we finish coding up her ultimate special abilities. 
I’d like to adjust the stats/skills across the four default heroes so they’re not clones, but it becomes a bit of a balance problem, since many of the very early levels are tuned towards those hero stats to make things easy to learn the basics (kill the munchkin in two hits, be able to survive only 2 munchkins with no armor but 3 munchkins with armor, etc.). At some point, it’ll be a good thing to do, though.