That unironically would be the best way to go out. Luffy is about to become Pirate King only for Buggy to steal the glory purely by accident, and all Luffy can do is give a bullshit grin and say "I lost" like he did when Buggy had him on the execution platform in Loguetown. The ideal clown ending for the clown saga.
I want Buggy to find the One Piece before anyone else, and laugh when he does.
Oda is smacking us over the head with a frying pan like Tom and Jerry cartoons trying to make it clear that Shanks is upholding Roger's legacy. Shanks and Rayleigh still are in contact, too; if Shanks doesn't know what the One Piece is, he at least knows what Roger wanted after finding the One Piece.
Buggy has no idea what the fuck went down on Laugh Tale, that's obvious. Buggy discovering what Roger died for is huge for his character IMO, no character needs to reach Laugh Tale more than Buggy (except that silly rubber guy)
Honestly, I'd like it even more if Buggy and Shanks found the One Piece together, and laughed together. Roger's two crewmates who were left behind, seeing what their Captain found, then going back to help Luffy get there himself.
There are two members of Roger's crew who still need to reach Laugh Tale, IMO.