Haha I love this!
I've also been pondering it! Lol.
I'm not sure I'd be likable enough to win tbh - I'm quite opinionated and tend to have a marmite effect on people
If I was to go in as a catfish I think I would have to proper delve into developing a character and have a ball with it but again who knows if I'd manage to keep it up haha.
If I went in as myself I would definitely just stick to my principles for better or worse though - I wouldn't do a Manrika and go in as myself but be completely fake to the point of almost catfishing myself some how