The Lucky Absol , you forgot SD Gallade... both of them (Offensive SD and Bulky SD) so this adds on to your versatility point. I do back a nomination to
A rank, but not A+. Moltres, Delphox, and Venomoth are stupid common and have ways to beat Gallade. The coverage is great, but this also leads to what is arguably the worst case of 4MSS RU has (hey, just like BW!) Generally the best way to go about Gallade is Fighting STAB, Psycho Cut, Knock Off. From there, you have to choose between Ice Punch for Gligar, Leaf Blade for Rhyperior, or Fire Punch for Escavalier. And if you plan on using SD, Bulk Up, or Sub to setup with, you have room for none and then it really gets difficult to cover everything you want to. Gallade is solid at A rank, but the 4MSS and issues with top threats like Moltres, Delphox, and Venomoth hold it back from A+ imo. Now on to a couple of other things:
Agreeing with
s_aman on Durant moving to A-. I actually pushed for this earlier, so glad to see someone is on board with me. Scarf wants to run Swarm though. The power from Hustle is nice, but you shouldn't have a 20% chance to miss with all of your attacks as a revenge killer.
Zoroark: Definitely agreeing with this move. It's so versatile and forces a ton of 50/50 plays so long as it takes the same amount of hazard damage as the thing it's disguised as. Specially-based Mixed Attacker, Physically-based Mixed Attacker, SD, NP, Specs, Scarf, Band, and even Agility of you want to go out there. This thing can do almost anything offensively. Frail as fuck, but it still takes a Scarf Braviary's U-turn with a little consistency... Definitely want it up to
A+.
Escavalier: I don't agree with it moving down. Sure, Esca is 4x weak to Fire, but let me ask you something. Why does Gallade even consider running Fire Punch? Why do most Slowkings run Fire Blast? Any reason Zoroark should be using Flamethrower over Focus Blast? The answer to all of these is Escavalier. Point is, Esca may have a detrimental 4x Fire weakness, but this causes it to define the metagame to an extent. These Pokemon wouldn't really consider running Fire-type moves were it not for Escavalier (Gallade and Zoro especially) I think it should stay in S rank for this reason.
Slowking: I've actually been using this a lot lately, and it works really good. Although it has a hard time with some top threats like Venomoth, Sharpedo, and Zoroark, it also handles some top threats such as Delphox, Moltres, and Rhyperior quite nicely. The ability for it to fit onto many different teams and run multiple sets warrants a spot in
A rank imo. It has the bulky / defensive versatility of Zoroark, but the inability to handle some of the biggest threats in the metagame hold it back from A+.
Meloetta: While I only have experience with using the Assault Vest set, she is incredibly versatile. A god-like movepool creates a ton of possibilities. Offensive CM, SubCM, SpDef, Mixed Relic, Specs, Scarf. A lot of different sets complemented by different moves as well. Each set has a calling card that makes it unique, whether it be Meloetta's typing, coverage, or utility moves (such as Heal Bell for the SpDef set) The higher Speed compared to Slowking is enough to separate her from King to be
A rank as well. She's solid on most offensive and bulky offense teams and can even utilize a SpDef set for balanced / defensive teams.
Another nom I want to make, but I need to gather my thoughts first.