My main issue currently are:

• rewriting the editor to be more usable (embeddable into projects),
• using Linux API for my own direct media layer iota in ways many did not expect, to add support for things like HD rumble (regular rumble will also use HIDRAW, because of how overcomplicated the evdev rumble is).

BTW, I'm in the process of stripping the D runtime out of iota, so it could join the ranks of SDL, SFML, GLFW, etc.