I would love to see some mini bosses implemented into the game. The dynamic of mini bosses is sort of already there where some themed levels end with a big fight. I'm thinking of something like the toxilargo, however while the toxilargo works thematically currently he is far too easy.

I'd like to see something like this extended to many of the theme types we already have. This would also be a great way to re-implement things like the tortadrone and vog cub. Also maybe add some special mini bosses for levels like graveyards (maybe a defeatable but powerful phantom) or to candlestick keep.

They wouldn't have to be something incredibly difficult - just something to break up the normal gameplay rhythm every once in a while and be something to look forward to more than just repeating arenas all the time.

Not sure if I made sense but there it is.