Breloom needs to stay in A+, it is not hit or miss at all. There is nothing that so easily and consistently threatens defensive teams while still giving you a buffer against dangerous offensive pokes like oh I don't know, Tyranitar's STABs... and the LO Aero that 6-0es everyone. Not to mention Mach Punch checks a fuckload of threatening guys, like DDtar, Emp, AgiliLuc, ScarfTran). Plus, a lot of offense falls back on Swampert as a glue for Zap/ScarfTran/Tar/etc and there's Loom's free entry. You're still effective against offense, just not as much as against slower dudes obviously. For the later gen guys, liken it to BW2/ORAS Landorus against offense, except Loom's a decent bit better. Against a bulky team it comes in so easily, it's SR resistant and heals in sand despite being affected by it. This is so big - you cannot rely on mostly passive damage to play around it like you do a lot of pokes, and you can't even revenge it with Scarftar reliably because of Mach. All its defensive checks have crippling issues - SR, Pursuit, and U-turn. None of them are sand immune either. The only exception to this is Aerial Ace/Impish Ice Fang Gliscor, but that's pretty niche and you still have to sac something to sleep before sending it in - plus, no Restalker is a good response to Loom. Please keep it in A+, he's one of a kind.
I agree that Scizor, Lucario and Infernape should be A+ (although I thought Ape already was, weird). Sciz because Scarf is amazing and bulky SD is the best sweeper, Luc is a terror whether you send him in early to open some holes or later when we all know what he does, Ape is self explanatory and that speed is so huge. It's part of why I think Gengar is super good rn. Speaking of, what do you guys think of Gar for A+? It's such a nightmare for both offense and stall but especially offense with that high speed and its scary strong LO attacks. It can also ruin bulky steel (Skarm Jira Zor Zong) + Bliss/Clef answers with Taunt/WoW. Yeah "scarftar pursuit" but Gar has the tools to beat it if the player is smart.
I personally think Zapdos is a tad better than Rotom-A, I think both should be at the top of A+. I think Zap has some arguments for being the lowest S rank but I'm content with it as the best A+ dude as well.
Heatran and Starmie definitely shouldn't drop lol, if people started using both of their LO sets again they'd shit themselves
Also Jirachee asked me to take these over (and make Gliscor A+ because Sand Veil is fucking stupid) so if you guys are ok with that I'll make a new thread