LooksMenu (same as RaceMenu for Skyrim) relied on quite a few Script Extender functions. I have no idea if the Silverlock team is even planning to me a SE for F76. Even if they are, they may not be able to (or want to) start working on it until official modding support comes out.
Sure, people are editing SWF menu files right now, but they aren't adding anything new. Or rather, they aren't able to do anything with them that the game doesn't already allow. Until we are able to edit plugin data at the very least, the most a UI replacer for the character creator could do would be to move the visual elements around, reorganize the menus, maybe add some sliders that control functions that are already able to be controlled, etc.