Don't know why but having the dialogue directly after asking the player for their name and heart's desire being "<Playername>:*sigh* I wish I had <thing_you_want>" was very funny to me. Really liked that opening cutscene and end image.
I actually think you could have got away with making the crumbling happen quicker, since most of the time only one or two tiles crumbled before I could beat a room. Good idea to have the curses follow you to the next room too - it adds a bit of strategy in choosing the order of the rooms like leaving the most problematic one for last but by then you will have three other curses to deal with.