Personally, something like generations-on would make sense. while the break era is breakthrough-evolutions, you can divide that further into breakthrough/breakpoint and fates collide-evolutions. Generations was just a gimmick set to TPCI has no reason to really pay any attention to it. Using it as a baseline for what to keep in standard allows us to lose tons of meta cards (i wont mention anything PRC-AOR since thats been established so: darkrai EX, max elixir, mega mewtwo EX, super rod, puzzle of time, manaphy EX, and more). This leaves us with one major XY archetype; volcanion EX, and were stuck with sycamore and N, but most other supporters are gone. While this doesnt allieviate all the issues with XY and the rotation, it leaves just enough XY cards in standard so that we have enough sets to rotate next year while getting rid of some pesky decks that would stick around if breakthrough and breakpoint stuck around. Imagine another year with darkrai EX; it would dominate, likely utilizing Darkrai GX to accelerate even faster. While volcanion would still be around, it would be significantly slower without all of the support from pre-breakpoint, and would slowly fade away.
While no one has addressed this here, expanded could rotate as well. IMO itll either be BW-dragons exalted being rotated, or all of black and white at once. While i dont think that fixes the issues with expanded at all because that leaves some of the biggest problems in the format (trevenant and toad) it could be a start.
Either way, if TPCI chooses to rotate less sets in standard (PRC-AOR for example) and doesnt rotate expanded at all, I think a heavier banlist should come into play to compensate. For example, banning volcanion all together in standard (thats a stretch but hey) N, or sycamore, or any other card they feel fit. Expanded definetly needs a banlist to at least try and make it healthier (laserbank, trev, toads, archeops, etc) but well just have to see.
While no one has addressed this here, expanded could rotate as well. IMO itll either be BW-dragons exalted being rotated, or all of black and white at once. While i dont think that fixes the issues with expanded at all because that leaves some of the biggest problems in the format (trevenant and toad) it could be a start.
Either way, if TPCI chooses to rotate less sets in standard (PRC-AOR for example) and doesnt rotate expanded at all, I think a heavier banlist should come into play to compensate. For example, banning volcanion all together in standard (thats a stretch but hey) N, or sycamore, or any other card they feel fit. Expanded definetly needs a banlist to at least try and make it healthier (laserbank, trev, toads, archeops, etc) but well just have to see.