As I rarely find a voice I actually like (and in this game I barely can tell a difference but usually go with voice 3 for males). I have zero issues with a silent main character. I can imagine the voice as being pleasing to me for the character that way.
I would prefer a deeper voice (and not like solasta where deeper sounds like he smoked 4 packs a day since childhood, gravelly is not deeper). Just deeper. Not the higher pitched voices that seem to dominate the voiced main characters in games so far.