notes on stat retcons

So far, two of the recent generations have buffed stats of existing Pokémon.

Gen 6 buffed stats of Pokémon that evolve at third stage by +10, except for Pikachu who got +20. About 29 Pokémon were buffed this way.

Gen 7 buffed stats of Pokémon that evolve at second stage and some single stage Pokémon and Woobat in a range of 10 to 40. HP was also buffed. About 26 Pokémon were buffed this way.

If this continues, assuming 20 buffs for each generation, by Gen 15, all Pokémon introduced since Gen 1 to 7 will have become buffed, in theory anyways(in practice, there will be stuff that remain).

Nonetheless a scenario like this one can be presented:

Gen 8: Buffing single stage Pokémon and some others.
Gen 9: Buffing middle stage Pokémon and some others.
Gen 10: Buffing first stage Pokémon and some others.
Gen 11: Buffing babies and some others.
Gen 12: Buffing weakest ones and some others.
Gen 13: Buffing some mascot legendaries and some others.
Gen 14: Buffing some minor legendaries and some others.
Gen 15: Buffing some Mega Evolving Pokémon and some others.
Gen 16: Buffing some Pokémon that have special gimmicks and others.
Gen 17: Buffing some former fully evolved Pokémon and others.
Gen 19: Return to third stages with higher BST upgrade.
Gen 20: Return to second stages with higher BST upgrade.
Gen 21: Repeat Gen 8 onwards with higher BST upgrade.