>>26815558Old & New
Space & Time (Gen 4 kind of did it already)
Dumb & Dumber
Anniversary Edition
More color contrasts to return to the basics
More mineral contrasts to appeal nostalgia
More abstract like XY(Z) for first 3D game in main series
Pokemon: Masudaless
Pokemon Shiny - Gimmick is shinies to make people buy it
Anime Tie-In Edition, since Yellow wasn't enough
Pokemon Generation Number
Pokemon Year Number
Pokemon: Insert Rival Legendaries As Title
Realistically speaking, there are endless options that can be used. It just depends on how money happy GameFreak becomes down the line. Depending on the success of Go, on top of Nintendo being more open to mobile and not presenting any successor to the 3DS at this point in time, we may very well be on the precipice for the first ever mobile generation. No telling where things may really go from here, because Yokai Watch seems to have shaken GameFreak up enough that we're getting a ton of changes with Sun & Moon to appeal to a newer crowd in order to compete, as opposed to the usual "People buy on name, do the traditions for easy money and keeping players placated with the new generations"