When my game first launched players demanded that I would allow them to change the MC's name. I thought it was silly then and I think it's silly now but I added this ability.
Why it's silly? Because all storytelling art (Literature, Cinema, video games) is based upon the principle of the viewer/reader/player identifying with the protagonist whether that protagonist is a female archeologist, a hobbit or a robot. I can't relate with the claim that players need to identify with the MC's name in order to enjoy the game, that's not how storytelling works.
Why I added this ability anyway? Because it took me 5 minutes to implement it, it's not an issue I was going to fight players over. Having said that, I always refer to the MC as Karder and most fans use that name as well.