It has some annoying nuances, as you would expect from a comedy of errors, but it's also very charming, enjoyable, and I loved that it didn't go where I dreaded it would.
I like that it's not just saying one thing, and there's some things to think about. At the beginning, it makes you think "no, I don't want to have anything to do with this 'crazy' man" But as the film goes by, and we meet Elwood (and Harvey) through the eyes of multiple people with different opinions and also their similar stand on the situation "we need to 'cure' him." But at the same time, we agree, "he's a sweet, sweet man."
One of my favorite things about Elwood's character is his personification of Harvey as an aid to other people's worries: "He's bigger than anything they carry" or something to that effect. Specificity aside, the quote is sensible and sentimentalist, one that I would say represents the heart of the film.
Another aspect I love about this film is Josephine Hulls' performance; she's a sweet, dignified lady whose acting style fit the movie's mood perfectly and trailblazed the appeal for the rest of the characters.
It's an interesting mix of fantasy and reality, and it did keep my attention throughout. Great movie, and it won my favor.