I don't know how one would go about fixing the eyes, but judging from the comparison pics by Anthrapoid (way) earlier in the thread a little darkening of the fur on the head and doing some touch ups to the lips will go a long way. Both should be doable even for a novice (I hope) in the case there is no tweaks made before release.
It's going to be really interesting to see what mods people attempt with this guy once it's in-hand. Darkening fur in places? Moving facial pieces? Reshaping the mouth?