>>54392998>Pikaclones don't evolve There was no pattern for this because Marill was the first three stage evo that was a pikaclone.
>Legends don't evolve Considering that Cosmog was story related to Su/Mo it would make little sense for it to start off solgaleo. Also Legends don't really abide to the same rules. Type: Null evolves into Silvally. Besides that, No one ever actually said this. They been added alternate forms to legends and while not a "legend" Manaphy is able to breed with Ditto. This was back in Gen 4.
>Introducing new Pokemon in Generation No one said this. Infact they showed new Lycanroc Dusk form right off the bat in USUM and in Gen 4, Rotom didn't get his forms till Platinum.
>Z version There was never going to be a Z version. But I can't really comment on this too much because people saying this, didn't for long.
>they break patterns all the fucking timeThey haven't. They really haven't. Not to the extent you are implying. Stuff like finally having a quad-fire starter is a good example but even then not like giving an extra evo to an split-evo line. There are some things that have remained consistent.