With another old gen means more old move tutors! Which means an expanded meta! What movesets are you excited for? Whirlpool × Sab Sipper Azumaril Zap Cannon Sheer Force Tarous (Really an ZCannon mon not normally learned for that matter) Nightmare Butterfree/Dunsparce (XD Butterfree is better due to having Compoundeyes ntl) Curse Anything (Dunsparce and Suicune in particular)
Psych Up Snorlax has some Potential to wreak havoc, especially with things like Speed Boost/Swords Dance Batoners and Shell Smashers. Though I feel most people will just stick with Curse. Tyranitar can also relearn Fire Punch via TM. Not the glorious Ice Punch that was given away with the event version, but it's something.
I hope the Snorlax can get Recycle too some way because then it could be a sweeping wall! Tyranitar is nice with Fire Punch... Stinks it get Unnerve as its HA (VGC playable maybe) though. Then there is the hopeful chance we get Move Tutors in USUM and that would likely be one (Elemental Punches).