I agree with most if not all of that. I just wanted to counter the notion that many seem to build, that if you go abroad you just get much better quality, much cheaper, simple as that. We've at least proved it's not that simple.
There's an exponential curve of cost v quality for all players. We can't afford to get to the top of that curve, so when it goes wrong, it takes nothing for a £20M player to slip back down to become a £2M player.
Lower down, when you get it wrong, you forget about them / move them on. We no longer have that luxury.
My point being, Wilder is only partly to blame for the above scenario. If we heap too much of the blame onto him, we end up binning an exceptional manager for, very highly likely, a poor one.