I'll give you credit OP, this is a slightly differently put question from your normal body swap threads :P But nah to answer the question seriously, this sort of thing is always hard to wrap my head around, I can only imagine him being a different character who hasn't been on the show before, not a current one.
Perhaps Max would be a good villain, the kind who moves in with his trophy wife and no ties, who then buys the nightclub and feuds with Phil Mitchell eventually for control of the square, very patchy in theory but I feel like Jake Wood could play a good gangster