Expanding Force: I don't think this move fits very well on most things, and Jynx is honestly no exception. But if someone wanted to try out a Psychic Terrain team, Jynx's good Speed and Lovely Kiss support would be a good candidate.
Meteor Beam: This could finally give Omastar a strong STAB Rock move to use its much better special attack.
Triple Axel: Not sure how likely this one is, but with Articuno also gaining Brave Bird as a TR this generation, a physical set could be a nice lure/surprise set considering its Attack and Special Attack are fairly similar. Can't forget the Heavy Duty Boots mention that will make this mon better than it has been in the past.
Dual Wingbeat: A decently strong STAB Flying move that doesn't need a second turn like Fly. Could be good on Dragon Dance sets if those ever pick up usage.
Grassy Glide, Meteor Beam, Scorching Sands: Cradily got some huge buffs in the moves department this gen. With the addition of Power Whip and Rock Blast, while already having access to Swords Dance, physical sets could benefit greatly from Grassy Glide giving it priority in terrain. On the special side, Meteor Beam's Special Attack boost could help its offensive presence and Scorching Sands could give it more support with a Burn chance (figured it fits with flavor text since the fossil was originally found in the desert of Hoenn).
Flip Turn, Triple Axel: These two I'm not too sure about, but Primarina gets Flip Turn and it's kind of a seal thing so this could make Walrein a really decent pivot. Speaking of Primarina, it also gets Triple Axel, which could be useful for Walrein since it now gets Swords Dance and a plethora of other physical moves.
Flip Turn: They did Flip Turn distribution kind of weird, so I'm not sure what all will get it, but Relicanth seems like a good candidate. This turns it into a slow Stealth Rocking pivot, able to take hits and even dish some back now that it has access to Body Press too. Would be very cool to see this happen.
Poltergeist: My original inspiration for making this list, Spiritomb like many other Ghosts (Dusknoir, Gourgeist, Dhelmise, Shedinja, basically all other Ghosts) lacked a strong physical Ghost type move, especially lacking arms for Shadow Claw or Punch. The strongest (and only) physical Ghost move it gets as of now is Shadow Sneak. Now with the chance of gaining Poltergeist, it might have a chance to pull off physical sets since the loss of Pursuit also came this gen.
Scorching Sands: Gabite was definitely no star last gen, but if it gets Scorching Sands, it could turn into a great defensive wall, burning opponents, setting up Stealth Rock, and chipping away with Rough Skin. It won't make it the greatest mon, but I'd be curious to see it used. Also looking forward to seeing TankChomp come back in OU with this but that's for another day.
Dual Wingbeat: With Heavy Duty Boots existing, maybe you don't want to run Acrobatics on your Archeops. Dual Wingbeat is here to solve your problems with only a slight power decrease.
Misty Explosion: Already has regular Explosion, but with a STAB one, this could be much cooler. Also gets Body Press which is another reason it could be more viable.