Did we just sneak into a tank meta?
How the hell did this happen?
Usually i would go into a long drawn out reasoning here but i really dont know.
I actually liked S5s tank meta, this one however is a little bit annoying because the tanks are living for ever AND kill you really fast.

EDIT: Jax is a running joke i have that hes diverse, but if you want more REAL tanks that are strong
maybe
and while not CLASSIFIED as tanks
and sometimes
also get tanky.
While not complete tanks, the point of a tank meta is there are multiple people who can build almost full tank with the exception of 1 or 2 items and still kill your carries, while your team can't kill them. And "although nerfed TODAY" COTC has been a MAJOR provider in this.
Every person i listed (except jax) can build 1 item then full tank then kill 1 or multiple of your teams carries without dying.
whos passive was moved to maw an all around inefficent item and now useless because you have to get so low to even get its passive it might as well not even be a spell sheild but rather a general sheild to give an opportunity to use the healing stats other wise there is no reason to touch the item especially after it got changed to get ad rather than attack speed which bruisers need but only have one choice source to go to being trinity force but if you dont like that 1/3 of its stats are useless on you or that spell blade isnt good for your character or that the item bearly give health for a item meant for melee charactes while mages most of which are ranged all of their items with health has more health even the recently nerfed previously overloaded item 

and have to build 4 tank items includeing defensiv boots just to survive make burst and adc crits and the same crits 3 times every 2 seconds and same burst every 3-5 seconds.
bruisers are supposed to be less safe melee carries but they are just psudo tanks and even to tanks if you ranged no defense squishy gets caught they need to die for how much headache they are allowed to give out for free at safe long range.