Originally Posted by Fluent 
As long as the main character is customizable in other ways then it's no big deal. To me, anyway.
I wouldn't be surprised if CDPR encouraged modding of Witcher 3, even providing tools. I think mods in open-world games are really going to catch on. If CDPR is really learning things from Skyrim and Bethesda, they will encourage modding as well.
Mods are going to catch on? Bethesda has been doing them since oblivion(well you could mod the other ones but it wasn't as main stream.)