I always have chibi Jjba brainrott just the idea of not only an everyone technically lives but interactions like young Joseph meeting OldSeph and having a who's the better Joseph battle with Caesar,Avdol, and Polnareff judging the contest XD only for part4 Joseph to run in and steal the show grabbing the trophy with a nostalgic "Runaway".
The Jotaro's singing a song they like (different for each Jotaro phase) only to end in OceanMan.
Dio dropping off a giant box at Jonathan's doorstep like
"Ha yeah..your problem now Joestar" proceeds laughing as he runs away.
"Oh that Dio!!"
He would open the box to find Dio's kids (also his?). Dio just didn't want to deal with or handle them expecting them to give Jonathan Hell and a run for his fortune only to come back and see everything's under control he was doing both mother and father roles and they look much better than how he left them. Not wanting to be outdone by a Joestar tries bringing in Giorno like "haha my son is better" only for Giorno to say "Hey dad" as he walks to Jonathan and Dio fucking dies. Pucci runs in like "Dio-sama!" Picking up Dio and zooming.
Josuke playing a video game only to be sucked into the game meeting Kakyoin and they both are confused but teams up to defeat the game boss it was an enemy stand. Now how do they get out? Okuyasu walks into the house and is like " Oi Josuke where are you?" Shouting from both Josuke and Kakyoin only for Josuke's mom to walk in like
"Well he's not here playing that game he must've already stepped out Okuyasu." As Okuyasu leaves she turns off the tv.
"Moms am I right" Josuke would joke.
"Same..." kakyoin would agree
Silence would take and then.
"Want to go play another game here?" Kakyoin would break the silence and they'd walk off to the next game.