Oh this set is fiiiiiiiiiiire! The novelties are cute and the Hangul Alphas are *chef's kiss*, I'd have to channel my inner Pokemon hunter and catch 'em all. I think if there were anything I'd personally want to change it'd be to either add the text to the other mods, convert the other mods to text-only (which COULD look fire now that I think about it... a-la Minimal which DOES KINDA FEEL like it's in the spirit of the mod/nav keys for this set and their low-contrast vibe) or convert the R4's to Icons for better overall visual symmetry.
If you went the route of the "Minimal Mods" look, that could also provide you the chance to introduce a kit for Hangul mods in text-only. The nuance and, IMO, beauty, of the script for caps like that might be lost with low contrast legends and I don't even know if there's molds for that... so maybe not BUT THROWING IT OUT THERE ALL THE SAME.
Weirdly, the Nav cluster being in text DOESN'T bother me in the same way... but again this is just my personal preference talking. I think I could still look past it and enjoy the set all the same tbh

. GLWIC!