Very fun game that I'd happily buy the full version of but hope a commercial release would include:
1) Full screen support.
2) Meta stats recording elements of bets runs ala a Hall of Fame.
It doesn't even have to be really deep. Stuff like encounters survived and average level of the group at the end might be nice.
It also might just be me, but I have little interest in cumulative stats, like the classic, "You've defeated X baddies in all games so far" unless used to tell averages so we can see how this last run compares to our best or average previous runs.