I would love that feature too!
Also, would be please have that just for appearance? I love clicking on a random button until I'm surprised by a cool combination I wouldn't have thought of myself, and select it.
Actually, I referred with my example to the appearance as well as that's what ESO does very nicely.
I find it also usually quite tedious to design my game character piece by piece like some genetically designed freak but prefer let randomness take its course.
But such a random system which allows individual locks for every feature would also work for the skill system as well.
I am very curious what the Larian team can surprise us with down the road in a year with their enhanced edition of D:OS2.