Getting things polished vs adding new features became a battle towards the end :).
Rather than figure out and work in the code for auto detect, i decided to stick in a manual reset button. As i developed the gameplay, this turned into quite a good strategic tool to use as a player. Choosing when to clear out the mine to start a fresh, to try and gain new bombs and such. With more time i'd like to add a few more things, such as move suggestion. Auto shuffle may come in with some game formats, depending on gameplay style, but it's on the list (i should write this list soon :D).
Buying moves was something i wanted to add in, specifically for the last mine, where it's expected and required that you'll need to use up your gold buying moves to complete it. On a difficulty level front i leant towards trying to make things easier, so that more people would get through and enjoy the process and complete the "story", especially in this GameJam set-up (the old mantra that your an expert at your own game, and other players won't have played it before). But moving forward the cost, and such for this element will need to be looked at i think, so it's something to consider moving forwards.
As for the music, you're the first to not like it :D. I've had loads of feedback from people loving it :). I was restricted to things i could find, Copy-write free, and redistributable (which is very hard to find with Music). But i respect your'e opinion on that front, even if i disagree :D. I'd probably look to get new music anyway in an expanded project.
Thanks for playing and the feedback, i appreciate it.