It's based on THE MATCHMAKER, if you've read that play, to get an idea of the book's concept.
It's difficult to critique the choreography as I would hope the choreography would be different for each production, no? Unless you're referring to the Barbra Streisand movie.
I enjoy HELLO, DOLLY! although I don't think it's the greatest piece of musical theatre. It's not BAD, but not the greatest. It's not GYPSY or WEST SIDE STORY.
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle