I think that while I really liked a lot of this season, the reason that we find it (myself included) so mediocre is that a lot of us were hyped for this to be the best season that New York had seen in 15 years. I mean we had:
A new Jason Robert Brown show (BOMC)
Tom Kitt and Brian Yorkey's follow up to one of the greatest musicals ever written starring a musical theatre legend (If/Then)
Disney's first show after rebounding from their awful streak with Newsies (Aladdin)
A musical adaptation of one of the best movies about New York ever headlined by the man who wrote the movie himself and directed by one of the most talented director-choreographer combos ever (Bullets)
An adaptation of one of the most beloved movies of all time that has constantly been on peoples' movies into musicals lists (Big Fish)
The supposedly new Jersey Boys about another legend of pop music (Beautiful)
A big splashy musical directed by one of the most innovative directors working in the theatre today written by some extremely talented people with a great source material coming off of rave reviews from Germany (Rocky)
An adaptation of one of the cornerstones of musical theatre literature written and directed by arguably the best bookwrighter of a musical ever.
Though a lot of people liked some or all of these shows (including myself) I will say that not a single one of them lived up to the expectations that we set at the beginning of the season, which is why it feels so underwhelming. At least we still have some incredible revivals this year (and every year) and, of course, A Gentleman's Guide to Love and Murder and Fun Home, but neither of those were nearly as hyped as a lot of the shows opening on Broadway this season.
Anything regarding shows stated by this account is an attempt to convey opinion and not fact.