I'm into Python. I'm also into Haskell. Livescript's syntax reminds of both. I think you might like coding in it. Cannot blame you for wanting to stay away from js.
Standard TIFF support would be useful. I've debated doing it myself, but haven't set aside the time. Also, I'm totally in a Python phase and don't want to go back to JS :P. Thanks for your hard work. This is the best texture saving script out there!