I usually take Wyll in my team caster party! I think his voice actor does a good job. It doesn’t bother me that he has lost some of his power, as seems to be the case with most or all of our companions. Not really looking forward to Mizora, though, especially if she stays at the camp. Otherwise, I don’t have strong feelings about him and will have to see how his story progresses!
I never got the impression that he was an alcoholic, though.