I have kind of a soft spot for O'Neil.. in a "as long as he's not our manager" sort of way.
he's intelligent, can be funny, likes doing his own thing and as Vlad says, does seem to be mentally unstable. That's what I like about him.
As a manger he has the ability to make shit teams over-perform into average teams.
I don't think he c0ould taker us any further forward than Benitez.
The only argument for retaining Benitez for next season is that we can't appoint a sucessor who, on the balance of probability, is likely to do a better job.
The only attraction to apointing manager like O'Neil & Hodgson would be the hope that they could get reasonable results from the curent squad with minimal investment.