Zamazenta-C took a heavy hit for the most part. Interprid Shield got hit, it lost some bulk and attack power as well. Honestly, would not be shocked if it got tested in Gen 9 OU at some point, Body Press be damned. Still is gonna be a bit dicey, but I do think that at least by the end of the DLC period, there will be serious discussion of testing this thing again.
Speaking of things that will be probably dropping from Ubers: Cinderace. I still think this thing will have a niche in OU, despite the hit Libero is taking. While this does hit its long term damage output, it still offers a lot right now. Hazard removal looks to be scarcer, especially if we are losing transfer moves, so Court Change will be nice in this meta. It also will still hit pretty hard and outspeed a lot of the meta, letting it act as a solid pivot still. Its just no longer nuking everything with super effective STAB hits every turn.
I do think that Ace and the other good Protean mons could easily have a niche in our early metagame at least. Greninja and Meowscarada both outspeed a large part of the metagame and would be effective revenge killers. I am not gonna go into detail on Battle Bond, since that is its own can of worms. But just having a solid pivot that can revenge kill and snipe stuff with super effective hits is decent. Both also offer some nice utility with hazards and knock off respectively.
Hoopa U also is coming back with transfer, which is neat. Hope it is a little more viable than SuMo but less dumb than in ORAS.
Broadly though, I think the biggest thing is that if transfer moves are nixed, Hazard Removal is going to be a lot harsher than it was in SwSh. Defog is not as prevalent without transfer moves. If we lose defog Lando-T in particular, that means the hazard game is gonna be very different. Likely more boots/knock off as a result. In terms of solid new defoggers, Hisuian Lilligant and Hisuian Braviary come to mind. Rapid Spin is a bit more accessible. We have some good new spinners potentially like Great Tusk, Iron Treads, Ququaval, Brambleghast (hey its a spinblocker that spins), Cyclizer, and maybe Tatsugiri. Tidy Up with Maushold is interesting, but I am iffy on how strong it will be.