I've argued about this plenty of times but people think I love Moyes when I do. I'll try to explain a little though, I think Moyes is a good manager for top 6 clubs. He recently did very well with a West Ham that was absolutely destroyed and I'm well aware he did shite at Sociedad and Sunderland. Now we may disagree on this but I thought he did extremely well at Everton with the funds at his disposal. This was evident to how Everton was after he left (disregard the current big investment). Not to mention before Everton he showed signs of a good progressive manager as well at (I believe) Preston North End.
So I do think we would have been shit with Moyes but I think he would manage top 4 or top 6 quite easily. Our best signing till this day are Moyes era signings: Fellaini, Shaw (basically scouted under him), Herrera and Mata.
I don't think he has any more disdain for the club that sacked him than any other manager that gets sack. That's football. Have you listened to LVG interviews? He shits on our club all the time. It's the same with 90% of managers. They think they're the best and shit on the club when they get sacked. Who cares?
Also getting rid of that backroom staff was a good decision. Rene Mulensteen is a fecking joke and I'm so glad he got rid of him first. You gotta manage a team your way and start fresh.
To summarize, Moyes would be shit for us and overall Mourinho is a class (5 classes probably) above David Moyes. They are leagues apart... however, Mourinho has gone into full self destruct mad man mode, is stuck in his ways and is toying with this club.
Moyes was just a shit manager trying his best but ultimately not good enough for a top, top club. But like I said, I think Moyes isn't bad for a top 6 club if you're being generous.