No it doesn't. Not going to read through a thousand posts but Genesect is fine. Who cares if it fills a thousand and one roles? The only think u guys should be wondering about Genesect is if its too damn strong, which it isn't. This gen gave Gene plenty of new checks. All of them are viable. If you think Genesect is too strong that's fine, but it definitely doesn't limit diversity in a very significant way.
And about it not limiting team building, Scarf Genesect alone does more to hinder hyper offense than anything I can think of, while making the old stall actually look viable still. It isn't afraid of offensive or defensive pokemon, and can only really be worn down via hazards or priority or other unrealistic damage strategies until its weak enough to pin down and KO. In that time, it could have KO'd pretty much any pokemon on your team it chooses, stopped sweeps, broken walls, and/or given clean switch ins to prevent you from ever developing momentum.
Then build a prepared team? Aegi, Conkel, Talon, Zard-x, Zard-y and Tran are all mons off the top of my head that check Genesect well in the early game. Are they perfect? No. Can they lose to specific Gene sets? Yes. But who cares? Play well in the early-game and figure out what the Genesect is doing. Once you do that Genesect is very easy to beat.
I know you or some other dude is going to be like "well if playing well is an answer to Genesect then nothing would be uber". The difference is that Genesect isn't overpowering any prepared team, unless one player plays exceptionally well or poorly. It lacks coverage to just run through teams, its spammable move isn't wrecking teams like BW Torn-T, when it sets up it isn't crushing teams like Lando-I in BW, it's not severely limiting offense like Thundy in BW1. Genesect isn't doing any of these things.
Lol, you make it sound so easy. Unless you can guarantee which set its running, here's what you can assume will happen to your "checks"
Aegislash:
252 SpA Expert Belt Genesect Flamethrower vs. 252 HP / 4 SpD Aegislash-Shield: 158-187 (48.7 - 57.7%) -- 50.8% chance to 2HKO after Leftovers recovery
252+ SpA Aegislash-Shield Shadow Ball vs. 0 HP / 0 SpD Genesect: 84-99 (29.6 - 34.9%) -- 11.8% chance to 3HKO
Congrats, your "check" lost while dealing less than 70% damage.
Conkeldurr
252+ Atk Conkeldurr Mach Punch vs. 0 HP / 0- Def Genesect: 88-105 (31 - 37.1%) -- 75.4% chance to 3HKO
4 Atk Genesect U-turn vs. 252 HP / 0 Def Conkeldurr: 46-55 (11.1 - 13.2%) -- possible 8HKO
Congrats, assuming you predicted the U-turn, you dealt 35% damage, but couldn't prevent the switch and now you've got a Talonflame or Deoxys-S or something of the like to deal with. If I were you, I probably would've gone for the knock off, but then Genesect would've gotten away to rape you another day.
Talonflame:
+1 252 SpA Genesect Thunderbolt vs. 4 HP / 0 SpD Talonflame: 376-444 (126.1 - 148.9%) -- guaranteed OHKO
Scarf outspeeds and OHKO's. Unless you know for sure its not a scarf genesect, Talonflame can't reliably check. I've even see Genesects used to revenge kill Talonflames locked into flare blitz.
Zard X:
+1 252 SpA Genesect Ice Beam vs. 4 HP / 0 SpD Mega Charizard X: 159-188 (53.3 - 63%) -- guaranteed 2HKO
This one gets close, with a safe switch in and no SR, there's not much Genesect can do, but it can't switch in to force Genesect out, and if it's weakened by SR or prior damage, it can't do squat. A weakened X can even be revenge killed by scarf genesect a lot of the time, so while this one is indeed one of the better checks, its still not consistent enough.
Zard Y:
252 SpA Genesect Thunderbolt vs. 4 HP / 0 SpD Mega Charizard Y: 166-196 (55.7 - 65.7%) -- guaranteed 2HKO
Similar to X, but even less realistic. Genesect will KO weakened Y's like a boss, and U-turn away from strong ones.
Heatran:
I don't even know why you mentioned him. Not even an idiot would stick around for Heatran to attack, and there's almost no way to stop the U-turn. It forces the switch, but now you've got to predict who's coming, and that's not easy.
*Note: Yes, a lot of these were worst case scenarios, but they are possible scenarios and illustrate that there's almost no reliable way to deal with Genesect. I didn't even mention shift gear sets that can ruin teams as well.
plz dont ban anythang
no shit bonkers af everything can be dealt with
gene ez just gotta predict a bit til ya figure the set out but dat ez since xy shifted to bulky mons
deo-s not evne broken due to defog and strong shit 2hkoing that guy (hy aegislash)
checked by quite a few good offensive mons and stall can deal with it just fine imo
teambuilding isnt hindered by them any more than it is by other stuff either (so much strong mons around :O)
my superior and rly grand as well as vast xy experience tells me that we should wait longer and let ppl find moar counters
dis is srs post with good value but my long posts are always ignored so fk it. and xy is fun - let it be. :)
If we let the clearly broken pokemon stay in OU, the metagame will evolve into something we don't want. An example could be how Aegislash and Lucario made the already crazy popular earthquake even more omnipresent. Lucario is too hard to counter, hits too hard, and is too hard to predict; Genesect makes hyper offense less viable, is too stinking hard to check, and annoys the crap out of me (not a reason to ban, but I'm tired of talking about it); Deoxys, you'll have to talk to somebody who cares more than I do, because I'm still making up my mind on him.