admit that you only want to have different ear shapes and heights that can be fixed with just a glamour fake elzen/hyur ears or viera wigs

Hybrid races would not be a good idea due all the combinations thew would need to make and some kinda touchy (lala x anyone) on connotations, no need to go that route of drama.

And if they implemented only a couple then again people will just complain.

What they should focus on is on give actual races more options, fist the ones already used by other races (hair).

Also to add more base customization options whey would need to rework how character data on body feature [slots] are used, a they are not increasing them due server data transfer limitations