Replaying Pokemon Red/Blue/Yellow via the edition you buy. The artwork on the sides would be uniform, but each backglass would focus on the starting pokemon! So you'd have to meet up with other players/editions or play them on location & truly catch them all. You could even make the few rare pokemon that do require you to play a different edition be a special multiball that starts almost immediately once you log in via a built-in WiFi that allows you to connect your Pokemon Go account. Ditch the story other than an intro when you first create your save file, but then it's all just battling, catching, gyms. Catching & battling would get a bit tedious, so that's where the save file comes in handy. Plus, you could have it build in complexity as the pokemon you are catching level up. The first few are caught by switch hits (anything on the playfield getting triggered) that build towards capturing. Then you have to hit specific shots, then combos, etc. (I love the ideas people have been throwing out for different modes. Catching by shooting a moving drop target or moving arrow/shot.)
Your save file is a click away via the app & a QR code on the machine's screen lets you pick up where you left off. That way you're not sick of the same basic animations being tied to the beginning pokemon, but you can make it through the grind of the game because, hey, at lease the Pokemon on the screen is changing, right? OMG & you could have a choice between the original animations or a remastered. Before you start the gym battles you'd change your lineup with a menu navigated by flippers/action button. I don't know how but you'd have to come up with a way to streamline the battles.
OH Okay, you could also incorporate a little mini screen (or if this Stranger Things idea works out, a projector, where you could change the drop targets & ramps to have the symbol of whatever Pokemon you just caught. Then the possibilities are endless!