BJ having less screen time is honestly a good thing heading in.
My biggest, biggest point of contention going into the sequel is how they handle the character. Beetlejuice is a truly heinous, scheming, dirty pest of an afterlife entity. Since the original film he's obviously morphed into a cultural phenomenon and pop icon. Very curious if he'll maintain that sharp edge he had in the original film of if he's dulled to the point where he's a more sanitized, friendly, de-fanged version of himself. Note that I haven't watched any trailers so if there's any indication one way or another in them I haven't been privy to them!