I give this a lot of thought generally. Not KP specifically, managers in general.
Bottom line is we can speculate all we like, no one's got a clue who's best to take over because anyone is just as likely to fail as they are to succeed.
Because someone's last job, or even jobs, ended in failure doesn't necessarily mean they're going to fail somewhere else. Equally hiring a previously successful one doesn't guarantee success.
It's always a gamble. The board can take as much time as they like to make what is considered to be a good choice, but it's still in the balance as to whether it comes off or not.
My own choice for example, Simmo. Great player, comments knowledgeably whenever he's covering one of our games. What he says gives the impression he's aware of our players strengths, and I've heard him say how or what he'd like to see them doing/used to make a difference to what he's watching. Surely in actual game time, that's exactly what you want from your man in charge? Doesn't mean it'll work though.
The best managers also usually have the best players to pick from, albeit they may set them up better suited to their strengths. I know I'll get pelters for this, bit how good actually was Ferguson? He had access to probably the best group of youth talent most of us have ever seen. Add the best goalkeeper of that era, and they were halfway to becoming the best side in the land already, plus a couple of great additions like Cantona. But once he'd saved his job he signed as much failure as he did success. Utds team virtually picked itself for 2-3 years.
So the whole thing is a joint effort, hopefully with the Cov lads on board we can source the best players in our own range. But for the actual manager, you just have to have a clear picture of where you want to be in 1, 3, 5 years and how you want to get there with style of play, budget, club structure etc. Then appoint someone you believe will deliver it.
The best example of what I'm waffling about is when the Neighbours appointed Moyes. Anyone outside of the immediate circle raised eyebrows and said panic appointment/cheap etc. But their board were always confident they had the right man, and they were proved correct.
So if we go for Dobbie, Charlie, KP etc their lack of experience doesn't concern me at all. I want someone who lives and breathes the place, understands how we've (nearly always) tried to play and uses the squad to the best of its capabilities. Which is why I personally choose Simmo.
My only concern is whether we have the right people assessing the candidates. Maybe we lack the advisory knowledge of yesteryear, but maybe also the new recruitment people can bring something to that.