A little sad it ended before it started (right after char-creation), reminded me of some of my childhood projects in that regard. I did have fun using up nearly 20 minutes creating alone though. lol (I did not read everything before downloading)
I was going to write up bug-report, but I see you already listed each one I had already in "known-issues" so won't waste time on that.
0. The intro animation was really cool, but the transition from anim-dialog felt abrupt (maybe because I clicked or something), I think a simple fade-in for the dialog-box when the animation ends would fix it.
1. Having something to sync hair color with all hair (including facial and eyebrows), eye color with all eyes, etc. Would be a good quality-of-life feature, ability to have separate colors should still be a thing (to be sure I'm clear). I did adjust slightly with darker-lighter (on hair) once I got all the variables the same for a more gradient effect myself, so I'd still use both features.
2. A way to click on the number on the slider to write out precise numbers, because pixel-perfect-sliding isn't always easy (depending on irl skill and mouse).
3. Clothing head accessory being separate, as well as hair accessory separate too. So can both have tail over shoulder, head-dress, and if wanted horns, all at once.
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Some random ideas that come to mind:
1. Ability to change sections of the front-hair color, mainly because had thought of some hair-designs that have a bang/strand as a bright/different color than the rest. (does mean needing to cut up the front-hair though, if game works as I assume)
2. A top, bottom, section of clothing. So can mix-match different clothes. (Might have issue of clothing designed for specific set not fitting/working with anything else though, and would mean redesigning all the clothes in that regard...)
3. Auto-saving for char-creation, because I get into creating, I forget to save. And a crash made me lose a lot (reminded me to manually-save and use q-save more often)
4. A revert-button, a quality-of-life for when you find something you like. Decide to adjust it and can't exactly remember how you had it before. This was a random thought, and I can just see using saves (as player) as the fix instead of this.
5. More hair/clothes/eyes/etc overall, because more is always cool... until there's too much. This one not important.
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I think that is everything, I will return to waiting for the eventual release.