I think you are right in terms of competing for a championship, the players are not good enough. But changing Mourinho for a manager that doesn't set up to play for a 0-0 draw and focus so much on negative tactics could definitely improve the club for the short term.
For example if instead of what we put out yesterday we went with something like:
LlorisWe are likely in a much better position to threaten Everton. I would persoanlly take Alli out but we really don't have a great option for him. Maybe move into a 4-4-2 with Son and Kane up front and Bergwijn and Lamela on the wings.
Doherty-Toby-Sanchez-Davies
PEH-Ndombele
Son-Alli-Bergwijn
Kane
Having a manager that doesn't insist on keeping Davies at LB to fit a silly LB does nothing formation would immediately help us be more competitive.
Not sure he's setting up for a 0-0 but I am sure he needs to figure out who shouldn't ever be starting matches for us. He seems hung up on 3 or 4 players being first on the team sheet that I wouldn't put on the bench.