It's really cool! Regarding the removal of races from character creation: I asked the programmer who wrote that, and it's indeed not possible. The issue is that the game initially loads all race presets from the Shared mod. Next, it looks in your mod. If you have files with the same name as existing presets, the preset data loaded from Shared will be overwritten with your data.
In general, our modding system does not allow removing anything, because in many cases it's possible that something else will still reference the removed entity and then you would get crashes.
I'll see whether we can get race presets into a separate mod for future projects, so simply not including that mod would let then you start from a clean slate. But no promises!
