wow, didn't knew about this and it looks absolutely awesome!!
times like this I would love to know how to code... I'm impressed, gonnaa download your hacks
EDIT: I see you are taking suggestions or help to decide sprite modifications... I'm kinda good at sprites, I was editing sprites for Protoman X for SNES, but, well, things didn't go well and I was just the graphic guy, so the hack isn't really available to anyone for use...
anyways, back on topic, not sure how much you could add or you can't but I did this modification and I believe it looks more stylish, so can be helpful for you