Very nice game, enjoyable but a bit unfinished. These are some things i think would improve it:
1. A bar telling you how much money you have
2. When you click on a party (prepared to enter the dungeon) you get a screen showing you who is in that group and the options to kick them out etc.
3. Hopefully more buildings and more possibilites in upgrading.
4. Maybe a training hall? Somewhere where you can upgrade specific stats of different characters.
5. More biomes with new enemies to fight.
These are a few features i think might improve the experience, i can´t think of any more right now but just generally make the game a bit more tactical and less short (it took me ten minutes to beat). Great game that could be extraordinary!