Hey guys. The council has made some decisions on the suspects:
Bans
Speed Boost - Further centralizes the meta around speed, priority and Prankster T-Wave. Staraptor, (Mega) Sceptile, Salamence and Scizor can abuse the ability and become difficult to revenge kill. Further reasoning from
G-Luke:
Serene Grace Shaymin-Sky - Nothing has changed enough in the meta to make it any less threatening. Its high speed in combination with Serene Grace Air Slash and Seed Flare make it difficult to deal with for offensive and defense teams alike.
Unbans
Shaymin-Sky (with other abilities) - Without Serene Grace and with Speed Boost banned, Skymin has nothing else to make it broken. Sheer Force hits hard, but is reasonable enough to be balanced in the metagame.
Greninja - Has competition with Protean Porygon-Z and has new checks and counters like Solid Rock Slowking and Sap Sipper Swampert and Suicune. Its previous counter, Porygon2, also gains viability in this meta with access to Protean and Poison Heal, as well as Trace essentially getting buffed here.
Landorus-I - A large portion of the tier is as threatening with Sheer Force and Cress and Mega Latias still exist as counters, along with Solid Rock Slowking. Has nothing better to run over Sheer Force.
Genesect - Hasn't changed too much, so it may need retesting, but the metagame has gotten stronger overall and it there are more switch-ins like Flash Fire Ferrothorn, Solid Rock Skarmory (to an extent), and various Rocky Helmet users that aren't threatened by its coverage too much.
Contrary - Possibly still broken, but needs to be seen in action to fully judge. Chandelure, Charizard and Cobalion all stand out as possible abusers, but each have their own weaknesses (Overheat Chandelure needs a Choice Scarf to do sweep against offense and is vulnerable to Flash Fire Ferrothorn and Heatran, Zard shares similar flaws with having a bigger SR weakness and Close Combat Cobalion is walled by ghosts, Slowbro/king and Starmie among others).