Theres a lot more positivity under Setien for now. I expect great results until the clasico at least (not the hardest run of games bar Valencia). After that the title is fair game.
Team needs a change in mentality. Changing a coach is just first step. We'll need to clear some air this summer too in order to have the right climate.
I remember pep starting shaky, Rijkaard for 3 months, Lucho as well - almost sacked. So don't expect miracles.