Whilst you're no doubt correct about the set up, I think the suspicion is that Paul Warnes list of "jolly good chap" characteristics is a) quite long and b) restrictive so we end up pursuing few alternatives.
We seemed to be spending a long time chasing one or two names. Lee Gregory was one repeatedly mentioned.
With all the factors you've listed, we probably need a shortlist of 4-5 but only ever appear to have 1-2. Perhaps Warne needs to be a bit less choosy?