I'm also disappointed he's been sacked, being an Everton fan
Portrayed as the image of Ferguson, any Everton fan will tell you he was nothing of the sort. Too conservative, too orthodox, too defensive. Lord knows where he got the reputation as a developer of young talent - he never went to see the youth teams play a match and only played them when he had literally no other choice. His success at Everton was persuading the fans and media that 7th place was an overachievement for little Everton. He met expectations not by improving our position over 11 years, but by lowering expectations. That would never work after Ferguson.
I think he has just served his purpose of being "the man that followed The Man", so when Van Gaal or whoever arrives they are already somewhat removed from the Ferguson legacy as they are "the man that followed the man that followed The Man". Not that I'm complaining - very happy with Senor Martinez!