Will do.
For now, I’m focusing on finding time to work on some neglected existing projects, preparing an initial release for a tool to streamline human-assisted OCRing of manga, and considering whether my plans for a tool to prepare tile atlases (as an assist for a platformer I want to code) should broaden into a free and open-source competitor to Pyxel Edit.
(But it definitely is an interesting UI design question… what controls would need to be exposed to an end-user to make it properly useful.)