I´m ambivalent as well.
On the one hand Moyes was a marvelous manager for getting us out of the dark place of the 90s, on the other he might as well go since he was never going to recieve the financial backing he deserved here. If he had, I believe we would have won things, and I also believe he´ll be a massive success at United.
At the end of his reign certain things started to become pathological at the club.
There was a increasing feeling that Moyes had become bigger than the club, and that we as Evertonians should be forever grateful for his loyalty and patience with our broke, inept leadership.
Things seemed to be in a perpetual status quo with Moyes in charge during the latter years, the proverbial glass ceiling if you will. I have the feeling we could have played another 100 matches away to Chelsea, Man U, Arsenal and Liverpool still not have won. Everton under Moyes were simply not capable of it.
Part of that is due to never truly having enough quality in the squad, but part is also due to the manager who seemed to fester in a mentality of negativity. A big reason for this, I feel, is the fact that he was never under any pressure to succeed at Everton. His job was never in question and limited spending power provided an apt excuse. Stability was paramount, success a disposable luxury.
I also feel he´s been in Uniteds pocket for years and I´m glad to finally let som fresh air in.
As far as league positions go, I think we´ll be worse off under the next manager.