I've not followed him that closely after s4 ended, but based on what I've seen during the season and afterwards, he doesn't really seem to be a "functioning" alcoholic in the long run. So I agree that he would indeed be a fun addition for a few weeks, but I'm also convinced, he'll crash and burn after a while. So I think in a longer season he might have ended up being a less liked contestant. The cracks were already starting to show in s4. He really shouldn't return as a contestant. Same with Aryhe. I don't get why he wants to be a contestant vs freeloader. He could probably handle that better.