If he does well it's a great 'narrative' and I must admit partly I'm not onboard because he's not very fashionable - there's not much buzz outside L4...
but there's so many little bits that if it worked out would make it fantastic - Rooney, Barkley, Unsworth, Dunc, that new GK coach who's da trained Nev etc.
I understand it's a bit underwhelming, and I think some went a bit OTT in terms of Arteta or what's Kanchelkis up to these days? He doesn't sound very exotic, nobody else cares, but that's just perception, means very little at the end of the day. Would it help if I said that the one of the biggest management trends in Europe is developing your own coaches, it's about to be in, we're ahead of curve in PL
Look at the video on the last page about Nagelsmann, great young manager with new ideas, came through youth setup, did his apprenticeship with youngsters, brought through youngsters into first team.... It's pretty much the same pattern with all the young managers that people want, came through youth setup, did surprisingly well. Many of the better managers are coming out of Germany, where they seem to be in some sort of young management arms race. I'd suggest that implies they are not just giving young managers a chance, but they are getting a decent education.
Unsworth went to Largs in Scotland, the same place Ferguson, Moyes, Mourinho and more recently Silva. Here's an article from 2014 calling him another one off the production line
, as so many Portuguese coaches go there since Mourinho's success, AVB etc.
We could find the width of knowledge is too wide, I expect some naivety. But there are plenty of examples from across europe, where the new understanding has outperformed the perceived wisdom and often where young ex players have come through youth team management and inherited a crisis and turned completely around.
I've never considered an internal appointment before and I had a few candidates who might seem more rounded. But you can talk about promoting from within, if you're good enough, you'll get the chance, it's demonstrating it that matters. If his record wasn't as extensive or impressive at youth level, if he had issues with members of the squad, if he wasn't motivational or didn't have leadership qualities, we'd have more reason for concern.
His under 23s have had no problem turning over the perceived bigger clubs, he won youth league, several players involved in U20 world cup win. England has some of the best young talent in the world, but the standard to get to the top level is ever increasing. But the knowledge and skill base of coaching has increased with new managers and styles in recent years. There is reason to think that he probably understands a lot more about tactics and systems, than people expect.