The game is not experimental enough anymore...
Riot has balanced the game in a way that playing unconventional champion picks or experimenting with different champion builds will get you a torrent of abuse and will actually lose you the game because there is hardly any way to recover from early game loss at the moment. This makes the game a whole lot less fun for me because experimenting with different champions added variety and an element of fun to the game that has been completely lost in order to appeal to one trick ponies on meta champions.
You see this with champions "reworks", with most support picks that used to be experimental picks in other lanes, have become boring and stuck to one lane only while sucking everywhere else. Same with jungle reworks too... League used to be a lot more diverse.
The game does not encourage you to experiment and find a playstyle with a champion that works for you. You are expected to play like everyone else that plays that champion and its turning this game into a microcosm of China and Korea where everyone is the same or encouraged to express themselves.
When will this end?