Some thoughts:
Not very many seventh gen mons benefit from this very much - telepathy is useless on the tapus, UBs only get Beast Boost, and Merciless is rather situational for toxapex. The only new mon likely to be OU who cares about this is Marowak-A; no recoil flare blitz is a major upgrade from fire punch if you wanted to previously avoid recoil.
From standard OU, Excarill really stands out to me seeing as how it now gets doubled speed and stupidly strong moves. Azumarill gets a grass immunity and 4× fire and ice resists with huge power. Ferrothorn is able to scout HP fire while keeping Iron Barbs. And Zapdos now gets Static, Pressure and Defog all on the same set. Breloom also gets stronger stabs on the poison heal set and a toxic immunity on its offensive ones
Idk why the OP mentions Salamence though. Its still a terrible option to run over the multitude of amazing dragon dancers in OU - Zard X, Mega Gyara, normal gyara and dragonite if you want to be hipster, and the newly viable Zygarde comes with amazing STAB, a better typing, and E-Speed. Salamence still has every issue it had 6th gen
Edit: oh shit porygod is amazing. Download + Adapatability is crazy strong