Some fun ideas I've noticed include:
[A]
Accelgor and Aegislash both get access to Aeroblast and Aura Sphere for their special attacking sets. Those two moves alone grant amazing coverage and they have the speed / bulk to pull it off along with good special attack stats. Aegislash could also sue the gimmicky Acupressure which might work in conjunction with its typing, defensive stats and King Shield. Alakazam gets Aura Sphere to use over Focus Blast for reliable sweeping, though its power isn't enough to OHKO a full health Tyranitar.
[B.] Bullet Punch Bisharp is a thing now, and don't forget Breloom getting both it and Bonemerang boosted by Technician.
[C]
Carracosta utilising Shell Smash can now use Close Combat to crush Steel types, as can offensive Crobat. Celebi, Cresselia and Cofagrigus get Clear Smog to stop boosting attackers in tandem with their excellent bulk (and can also all use Cosmic Power).
[D]
Darmanitan, Diggersby, Drapion and Druddigon all get Dragon Dance... can you say awesome? Dugtrio gets both Dark Void and Destiny Bond which work amazingly with its Speed and Arena Trap. Donphan gets more utility with Dragon Tail and Defog. Dragonite can add Drain Punch to its bulky Dragon Dance sets or use Dual Chop to break substitutes. Doublade can use No Guard Dynamicpunch, and Delphox can use Dark Pulse and Dark Void for coverage and to incapacitate a counter respectively. Dragalgae's Dark Void, Defog and Dragon Tail work well with its excellent bulk.
[E]
Escavalier gets Earthquake (finally!), as does Eelektross for its physical Coil sets; they both also get Extremespeed. Empoleon loves Earth Power for hitting those blasted Tentacruel out of the water.
[F]
Fiery Dance Froslass could be interesting for a special sweeping set, and it also gets Focus Blast to wreck Dark types. Final Gambit on anything fast with good HP could be an annoying surprise. Feraligatr, Floatzel, Flareon and Flygon all get to use Fusion Bolt to blow through bulky Water types, and Flygon can also use Fusion Flare for its mixed sets if it doesn't like Fire Blast's accuracy.
[G]
A lot of things now get Geomancy; notable users include Gengar, Goodra, Galvantula, Gastrodon, Glaceon, Greninja, and Gothitelle (hint hint Shadow Tag hint hint). Gorebyss could Baton Pass a Geomancy boost instead of a Shell Smash boost if it wants to give something massive special bulk as well as power and speed.