Responding to particularly bad arguments. I've realized I just don't have time to respond to everything dumb being said in this thread. It's a flood.
1) While it has few hard counters (sets that can counter after a boost), Salamence has many checks from all over the spectrum of roles. Just adding to kale's list, Jirachi can counter Mence with follow me so a partner can check it, Togekiss can do the same, although a boosted double-edge will probably OHKO or 2HKO.
This argument doesn't actually work all that well in reverse. An example possibility (obviously depends on the sets). Mence Protects while Mence's partner Rachi uses TWave. Now, if Ludicolo's partner Jirachi gets paralyzed on any of the turns while trying to use Follow Me, Ludicolo gets donked. Even against your marvelous pairing (and I'm even giving Ludicolo rain and Mence no boosts...) Mence and Rachi can still come out on top.
Your argument relies on hax. Ludicolo OHKOes anyway.
2) It doesn't switch in and instantly be at +1 or +2
If the ultimate effect is broken, it doesn't matter what the initial state is.
If your battling a good player, it can be hard to get to that finial result.
3) WoW and Intimidate are always common, and physical sets don't like them
Intimidate and WoW can be blocked by Sub sets. WoW can actually be taken advantage of by Facade while still being stronk af even when not statused. On top of that, Mence really does not give two shits about most Intimidate mons. Hitmontop and Scrafty usage has just totally plummeted. I wonder why?
It is a monster after a sub, but it can be stopped from subbing via double targeting, taunt, being threatened out, etc
4) It has 4MMS. I've seen so many argument saying "fire blast varients" or "Aqua Tail Variants", or varients with EQ, or Hydro Pump, or special attacking ones. It can't do anything at once
While 4MSS can mean that a mon really needs 5 moves to be successful, it is often instead synonymous with unpredictability and having many options. It has never been an argument relevant to banning something or not.
After and return, it only has 3 slots to beat it's checks. Sub is common and so is Dragon Claw and protect. It can't beat everything at once.
5) ANYTHING can be broken with enough boosts / follow me support. We should ban everything that can boost it's own stats if your that worried.
Lol
I was only half joking when I said that. It seems that most arguments say that mence is broken if it has the perfect storm of 2 dragon dances, a sub and Jirachi out on the field. I think that that's the only way mence could be broken, and it isn't broken otherwise. Why not ban what's actually broken?
6) The meta is really prepared for it right now
Really a suspect test meta is prepared for the thing being suspected? That's never happened before, has it? Oh wait. It happens in almost every suspect test.
What I meant in saying that was that a lot of centralization arguments are kinda moot because when smogon says this may be broken, everyone freaks out and runs anything they can think of to counter it.
7) Strong =/= Broken
Lol
What likes switching into a CB outrage from Kyurem-B that isn't a fairy or steel type? What likes switching into a Psycho-Boost from Deoxys that isn't psychic, dark, or steel? Nothing, and yet they aren't broken. A similar thing applies to mence, because although few things like switching in on it, many things can still beat it.
8) It has common weaknesses
It does indeed have a few weaknesses. Common weaknesses make a mon bad, right? That's why Terrakion is terrible. It's weak to Water, Ground, Fighting, and Fairy (not to mention Psychic, Steel, and Grass). In reality, Mence's type weaknesses are more than made up for by its awesome resistances, which make setting up on numerous mons in Doubles possible, even without redirection.
Nearly every team has at least ONE ice, fairy, dragon or rock move that can at leas scare mence into switching or protecting for a turn leaving it open for later.
9) It is very susceptible to speed control. Tail Wind and TR both can halt sweeps if timed right, as many checks become counters now that they outspeed.
I've addressed this before and a mon that redefines speed tiers and can boost its own speed easily just ISN'T vulnerable to speed control. Everything in Doubles is to some degree, but Mence is less so than anything else offensive in the tier except for Talonflame.
Back in XY, Kang defined speed tiers because it was considered fast back then, but it actually had ways of beating Tail Wind (with priority) or Trick Room (with hammer arm). Mence has no way to beat Tail Wind without having set up previously, and has literally no way to beat TR due to its lack of priority or speed lowering moves. It's also outspeed and OHKOed or 2HKOes by many common scarfers like Landoge and Hydreigon.
10) Saying "I need to run this or I loose" is a bad argument. In XY, you needed a strong fighting attack to check or counter Kang, and you needed a strong ice attack to check Landoge. If you didn't run those, then say GG from team preview. If that didn't mean broken with the 2 strongest mons last gen, then it may not be broke this gen
I had many teams without a Fighting attack that handled Kanga just fine. Plenty of teams without an Ice attack. What kind of meta were you even playing?! And if they actually were that centralizing, guess what? They WOULD have been banned. "I need to run this or I lose" is literally the definition of overcentralization, which merits banning. It's really, REALLY hard to take anything you say seriously when you conclude with something this clueless..
First, ROOD. And second, I meant you needed a check, and I listed the easiest methods of checking them. A strong fighting move is by far the best way to beat Kang, and an ice move beats Landoge. If you need to consider something in teambuilding, do that mean that it is broken? No! It means it is a threat. Teams have weaknesses to specific pokemon or play styles, so you need to be able to beat them. It's part of the balance of the game, and IMO promotes creativity to an extent.