Whelp, might as well share my opinions!
Tank meta was NOT the healthiest meta.
Debatable. Teleport+smite top lane and four tanks every team? Definitely not. There seems to be ambiguity on what a tank meta actually is to some people, and some people think that two tanks on one team with two carries and a support means it's a tank meta.
Yasuo is balanced
Depends on the argument you're reading. Blind QQ about his passive and whatever? Downvote and move on, I guess. In-depth explaination on why his mechanics need tweaking or they're unhealthy for the game? Fair starting point for a discussion. Blanket statement on whether or not he's balanced (and being balanced or not does not mean they're OP or not, I'd say), not so much :/
Lee Sin is balanced
Debatable. If he has a high skill cap as people say he does, wouldn't a 50% win rate in solo queue mean he's overpowered for his difficulty? o.O Anyway, it's mostly above. Personal opinion? Definitely not OP, and while his mobility and utility combination is an outright pain in the ass and Riot does appear to have a little bit of favoritism, he's definitely not as broken as much more striking examples anyone could pull up in this game. So, probably not broken. Maybe.
FQC is not used by midlaners because they don't have options, Just FQC is ridiculously strong, It has second best or third best active and you could get back around 1500~ gold from passive by midgame. All this while being gold efficent.
50 ability power ain't much, but the sheer utility and stats for 2200 gold is hard to argue against. Although I don't blame people saying midlaners don't have options, but it's obvious some people are just flat-out abusing it at this point. Maybe they need to offer a new mana regen + CDR item with a less powerful active?
Games end a bit earlier now, but that doesn't they don't last 30 minutes + 50% or more of my games last more than 30 minutes. If you fuck up early game you deserve to get punished for it. Also you can stall game by waveclearing, You can't pick Pantheon, lose early and complain about games ending faster. Early lane bully champions are actually viable now.
Yeah... I do remember when hypercarries were completely dominant, with a few utility carries (Ashe and Sivir primarily) being up there too. I'll have to give you one, you need to play the way your champion scales. And games do last long at times, and short at times, enough that my friends joke that ARAM is basically SR because of how long I can stall.
Fizz is not OP.
Fair. Given, he's f-king annoying, and one could make an argument about needing a rework or whatever, but a blanket statement like that ("Fizz is OP!" I mean) is going to get little more than an eyeroll from me if someone can't back it up properly.
LeBlanc has counterplay, But she can be VERY oppressive if player knows what he's doing.
Keep in mind that she's oppressive if the enemy player doesn't know what they're doing either. But, yeah. Assassins kill shit, it's not like Leblanc can do much else.
Rengar is strong, we get it, now stop making duplicate threads about Rengar being op, because of jungle changes, ward changes and etc.
Agreed, jeez. Instead of farming upvotes (because we all know what you're doing), just bump a singular main thread and keep it going instead of trying to make your own. We get it. You get insta-gibbed. I've read that fifty different times already.
.
Anyway, I slightly disagree how you went about this thread but given the format (summary) I guess it's to be expected you don't go super in-depth for everything right on the OP.
But, eh, you made some good points and I can respect that. Much better than boring QQ you can get from either side, and you made me think a little bit about things because of it :V