>>52736160It's for them to pretend they care about balance, while the superior origin forms of palkia and dialga get brought over, as well as legends plate for arceus (my guess as the first anything goes pokemon of the gen since it's a guaranteed super (and sometimes 4x) effectiveness on literally every judgment even if your opponent switches out first)
Every pokemon will be back in by the 2nd dlc, then we move to the gen 5 remakes and repeat with whatever overpowered game breaking stuff it adds.