I agree with this except snake and diddy should be in like medium, because they aren't that hard... i haven't messed with pit or oli so iunno the rest is good =)
Oli is easy for basic recolors but not so easy if you're trying to do something else.
Diddy's leg fur is mirror in a odd way that giving him detailed pants is a bit tricky, but the arms are not that hard.
Snake isn't that hard for me anymore but he does take time to texturize.
Also, givgng DK proper pants IS a compete nightmare.