However on the other end, I don't know about anyone else, but I got out of the tutorial and after getting a good look at my character in the open sunlight I didn't like the way he looked and had to make a new one. This I found frustrating, it wasn't fun and could be easil solved.
I think it would be a very welcome design choice to allow people to customize their character post-creation/tutorial area. They should be able to change their hair, tattoo's/warpaint in the cities from places you'd expect to be able to. Then for face changes you could implement it in a way that fits and doesn't seem out of the way. So for people who simply find out they don't like the look of their character they made after a bit or if people simply get tired of their look after a while, they change things about it.
In big open world rpgs like TES games you can spend hundreds of hours looking at the same character, it would be a very nice thing to be able to change that within the game without having to start over or use mods, etc.