Without a doubt Allegri deserves another year, and he has impressed me. Nevertheless, I will give him another year before I can truly rate him.
He has changed the system and done so when we desperately needed it too. His hands has been somewhat tied in this aspect with a lot of injuries as you guys mention. He has been more willing to land a hand to our younger players, more willing to rotate and try different things. More adaptive to circumstances and opposition, including during games, (tactically stronger) than Conte. He also has been able to change our attitude in CL, I really enjoyed reading his comment pre-Dortmund away where he said that what we needed was a goal, since Dortmund would score anyway there was no reason to park the bus - we needed to go forward. So there are a lot of good things coming around that I have been happy to see. I also think the team will be stronger after summer mercato when more players suited to his system has arrived.
Still, in serie a our only competition is our hunger to win. I think we all feared the players motivation this year before the season started and not the quality of the team or the competition. On paper not getting a scudetto would have been a big disappointment.
In Europe not getting through group stages would also have been a big disappointment. Dortmund has been very poor this year so even if I was really scared a priori this should have been a win. Now we will be facing Monaco and no disrespect but if we do our job we will go through. Loosing out in the semis will be sad but was never really on the cards until we got lucky to face Dortmund and Monaco.
He has exceeded my initially very low expectations but he has not yet done enough to prove me that he should stay long-term. I am more than willing to let him continue but I will probably wait with my sincere evaluation until after next season.
Furthermore, Conte is a great coach and still young. I would be happy to see him return in the future (but not for the upcoming years). Regarding the summer mercato, we've had a bunch of games where we've struggled to win and where Pogba and Tevez has stepped forward to bring in 3 points based on individual efforts (individual brilliance). I don't mind that at all, big teams can survive on occasions because they have these kind of players. I just hope that we can keep them and realize that quantity can help the team (vast difference right now between our benchers and starters) but quality players can break dead ties.