Hmm...Could use some music, but that's nitpicking. The main issue I've seen is when you tab out and work on something else--coming back to the game rewards you with a black screen, having only the characters available (at least during fights).
without players, there no UW! Tanks! P.S. New version with improvements based on DD-20 will be uploaded in a few days, please check in next week for the update!