As with a lot of legacy sequels there were a lot of references, jokes about and homage to the original film. Got a bit of background about Beetlejuice himself, what he did when he was alive, how long ago he was alive and how he died.
The funny bits were obviously when Beetlejuice was on screen, he had a lot more screen time than he did in the original which was a + point of the film.
Keaton played the role just like he did in the original, without him both films wouldn't be the same and I can't imagine anyone else playing Beetlejuice in future films.
I look forward to a third film but not in 36 years time, I can't imagine me living to 94.
PS I think Beetlejuice's baby's name was Chucky