It's interesting how people keep defending the bans by saying it keeps people from using the same pokemon over and over again, but if you look at the tries people ALREADY do that because if they're in this teir, they can't use that, that, that or that, so that ONLY leaves this or this. Even the smogon movesets primarily list moves to counter SPECIFICALLY NAMED pokemon rather than pokemon types and list the counters againas specifically named pokemon rather than types because of the tries, there's only specific pokemon you can use in specific teirs. Not to mention my endless rants against their idiotic bans (yes, idiotic!) Blaziken gets banned because of speed boost? I forgot that the faster it gets, the more moves per turn it gets. Oh wait! It doesn't! If you're slower than Blaziken when the battle starts, Blaziken gets NO benefit whatsoever. Then there's the stupid double team ban. Oh no! A move that has dozens of counter moves, several abilities and even an item that counters it, THERE'S NO DEFENCE AGAINST THIS SUPER MOVE! Better ban it from use! I'm just waiting for them to ban Nuzzle. (A move that damages AND paralyzed?! Holy crap!! Screw Arceus, pichu will destroy everything in existence! ;-) )
There's the lame justification of "evasion makes the game based on luck rather than skill!" Which could be said about EVERY move. If you're prepared, evasion boosts mean nothing. But everyone is smogon apparently loses both bladder and bowel control at the thought of it.
A HUGE thing that the teirs have produced is interchangeable movesets. You look (objectively) at a crap ton of the movesets are totally interchangeable. If it's a special sweeper, it has thunderbolt, flamethrower, ice beam, psychic. If it's a physical sweeper it has earthquake, Rock slide, close combat, flare blitz, annoyed have toxic, substitute, confuse ray, etc, etc. those aren't the actual movesets, but my point has been made that you can defend the tiers by saying that it prevents the same pokemon from being used over and over, but it really doesn't. It in fact not only makes the same pokemon used over and over, it makes the same movesets used over and over. It genuinely won't take you very long looking at smogon movesets to see movesets that don't even take the type consideration of the user into account, let alone ones that make no use of it's natural stat spread or ability. (There's plenty that DO, don't get me wrong, but there's stills significant number that don't)
Basically, everything is an interchangeable physical sweeper, or a special sweeper, or an annoyer, or a wall, or a baton passer, or a healer. The only thing that prevents identical movesets on everything in the same category is that not everything can learn everything. And on top of that, there's the hugely underused class if pokemon that are obviously meant to be evaders. Just because smogon wets themselves in terror at the thought of a surskit with double team, they simply ban the move altogether rather than learning how to combat it. There's many pokemon that have good attacks and speed but terrible HP and defenses. Obviously those ones are not made to fit into the narrow category smogon sets up, but rather their own class where they hit hard and just try not to get hit back in return by slinking into the shadows. But because smogon thinks every battle should be like the British army where everyone just stands there firing at each other no one learns new, unique strategies, no one learns how to use evaders and therefore never learns how to counter them, so the meta game stagnates because no one is trying creative, amazing, wonderful strategies, they just make all the pokemon fit into 1 of 5 categories and try to shoehorn similar movesets onto everything in that category.
I too am a strong believer in everything has a counter battling, because everything does. The teirs make everyone use the same pokemon over and over, but allowing anyone to use anything does quite the opposite. Sure at first people will keep using the most powerful same pokemon over and over, but then people will figure out counters to those, and the. More people will use those and someone else will figure out counters to those and so on and so on. Just because today everyone is using mega kangaskhan, for example, doesn't mean people won't figure out counters to those, have the counter on all their teams then very quickly no one is using kangaskhan but rather the counter, and so on and so on, and the game will evolve from there. Removing the incentive to think for yourself by banning pokemon, moves and strategies doesn't help anyone. It in fact reduces imaginative battlers and makes them unable to function if anyone else tries anything other than the smogon pre approved movesets.
Need a specific Berry? I have literally every kind. Need a Friend Safari HA pokemon? I have them all. Need a gen 1 - 3 (and a few from gen 4) Move Tutor Egg Move that can no longer be obtained? I might be able to help. Drop me a DM if you need anything and maybe I can help!
My first battle in a competition, January 2016: I call this "never give up!" :D YNUW-WWWW-WW3F-FMAQ