Hey, thanks for the feedback. Autosave is a good idea. I should look into that.
Music will be improved for future releases. Right now I just reused music that I already had from Marnie's Moment. I'm not sure why some tracks aren't looping properly, but I'm sure I can fix it.
Regarding the battles not having stakes or rewards - you're correct. Further into the game there will be rewards and winning or losing will matter more. Most of the battles on this first island are really just a glorified tutorial.
I'm working on the performance issues from lots of characters on screen. There's a lot of little things I can do to optimize performance. I'm still working on it.