The meta in a nutshell.
Looking at this picture at the bottom of this post, you will see something very special. Yes if you aren't blind you do see the Yorick. That is the reason why I picked the picture. But now don't focus on Yorick. Focus on the rest. Blue team has a Thresh, a Zed, a Nidalee, and a Vayne.
Thresh has good cc and is pretty reliable making him pop up all over and also leads to Blitz being a common support due to their pulls being so useful.
Then you have Zed. He has great poke in lane and an escape. Looking at purple team you see an Ahri is pitted against him. Ahri has been strong since 5.2 and is cousing mages to be so common. Zed albeit an actually balanced champion if the enemy actually has at least one CC other than a slow, will probably lose to Ahri due to poke.
Similarly on the poke path is Nidalee. Both have no risk high reward pokes. A problem that is unfair to any laner, ranged or melee, and could be corrected simply by giving minion aggro to people when they use abilities instead of just from autos.
And lastly, Vayne. Vayne has probably showed up in 80+% of my recent games. The reason is simple: she has the highest overall damage of every ADC. While wanting to keep her unique, Riot made her toxic by having her W deal true damage. Obviously a simple problem that could be fixed by changing either the true damage amount or the actual damage type.
Now on purple team. We do see a Singed which is interesting to see based on other popular top laners. But moving on past him and Ahri which I mentioned already, we shall start with Lee Sin. Obviously he is a strong jungler and many people hate the trio of him, Vi, and J4. Personally I don't like how his ult does 500 damage at level 6, but that is the only problem I have with him. Any champion with mobility or vision or cc can catch up to his jukes.
Next is Caitlin. She is a strong ADC obviously having the largest range in the game. A good pick against someone like Vayne. Unfortunately, in an attempt to stop Vayne she picked an ADC that will shut her down early, but will lose late game. Cait still has high damage though, which is what all ADCs are currently picked for; Poke and damage output.
Lastly is Morgana. For some reason squishy supports with shield and heals have been popping up since 5.4. The reason is simply that champions like Sona and Soraka are broken in what they actually do. They have high damage poke early and can keep their ADC alive through all opposing poke. It is something unintended, but will continue to dominate due to lack of counter play.
LACK OF COUNTERPLAY! THAT IS IT! Let's review. Ahri counterplay-Little to none. Lee Sin counterplay- Little to none. Caitlin counterplay-None until late game. Morgana outplay-None without a hard cc. Singed outplay-None late game. Thresh counterplay-Minions or get Madlife'd. Zed outplay-Only if you have a snare, silence, or stun. Vayne outplay-None once she gets BORK. Nidalee outplay-Late game only if you can catch her. Yorick outplay-Actually none because Yorick's damage is actually quite high.
Moral? If you have counterplay, you lose.