Reminder that home was specifically designed in a way that allows you to import pokemon from future games to previous ones by storing their movesets to their respective games.
You can catch a shiny pokemon in SV and use it in sword if you wanted to right now. Infact I did that in my BDSP shiny latias hunt earlier this week since its easier to teambuild in SV (and now I definitely don’t want to use this latias in Z-A until champions… or not at all)
Z-A not only returns the generational lock outs, but also there isn’t a mainline series game to even use Z-A pokemon other than Z-A which to most is closer to a spin off than an actual main line game (which champions is supposed to basically serve the purpose of keeping the main line mechanics somewhere while games do whatever now.). So if you were one of the few who happened to do some new-mega shiny hunts… well I would not recommended transferring them until champions assuming home patch and champions aren’t released as a pair.
You pay $15 yearly to move your pokemon to Z-A and not be able to use them for traditional battling anywhere until champions releases, and anything you catch in Z-A will not be able to travel back for ribbons and such.
I was happy with how S/V turned out but Z-A isn’t even out and I suddenly don’t like the legends direction anymore… I loved arceus but what ZA is doing sucks.