I am pretty sure Viktor is too strong right now.
Pretty much picked in all LCS games. I get that
,
and
are also problem atm...
is getting changed and
is facing nerfs, I am pretty sure riot is working on 
But there seems to be no notice of the midlane domination of
, High damage and easy waveclear and even has a speed boost in his kit.
Mid lane is currently the lane with the least diversity atm despite so many options being available for that lane. the trinities seen at MSI have been broken for the other lanes but not midlane it is ban
and
and pick
every game.