The Power of Z!
I can see the TRio getting maybe one more Pokémon, not including Bewear (assuming they eventually catch it); but to be honest, I don't think they will get any more Z-Crystals. The only Z-Crystal I could potentially see them getting is Poisonium Z, but I still think Plumeria is going to appear in the anime, and she will be the one to show off Acid Downpour.Hopefully this might also push the TRio to get more Pokemon and Z Crystals too, since they'll need something new to show to Giovanni and Matori every time they check up on them. I like this setup where they are forced to get some sort of change up, compared to them failing to deliver anything and Giovanni just not caring. It makes the TRio pitiful and desperate again, but more crafty and dynamic due to always managing to weasel just enough quota to stay in their boss' good books.
To tell the truth, I'm going to be...incredibly disappointed if the TRio get more Z-Crystals and Lillie, Mallow, and Sophocles don't get any. The TRio already have two Z-Crystals, including a Pokémon-exclusive Z-Crystal