So after bank the rules are being changed to permit some bank exclusive content, like HAs for pokemon that can't be chained for (this mostly helps Aerodactyl), egg moves with inaccessible chains, ect. They might also permit non-Alolan forms of Aloladex mons that have full Alolan lines. All of these are either garbage or straight up inferior to their Alolan forms except for Ninetales-K and Dugtrio-K. Ninetales-K doesn't do much in this meta imo but Dugtrio would be quite significant.
Another piece to speculate on is GF has hinted that players who own a paid subscription to bank when the update comes will get a special gift. The main guesses for what this will be are a Mew with Mewnium-Z, HA starters or HA Tapus. I think Telepathy Tapus would see more use than most people would assume, it would allow you to safely disquake with Garchomp/Koko, allow you to run EQ alongside Bulu, and allow Fini to do some status abuse sets.
Another piece to speculate on is GF has hinted that players who own a paid subscription to bank when the update comes will get a special gift. The main guesses for what this will be are a Mew with Mewnium-Z, HA starters or HA Tapus. I think Telepathy Tapus would see more use than most people would assume, it would allow you to safely disquake with Garchomp/Koko, allow you to run EQ alongside Bulu, and allow Fini to do some status abuse sets.