Been away for a while, What is with these changes?

So, I am not up to speed on everything in game but I have to ask what the hell has happened in the year-ish I have been away?

They added and changed a bunch of items to make everyone's mid game much better expect ADC's who were already late game champs to begin with.

Something is horribly wrong with turrets I have watched time and time again tanks just laugh at turrets at sub level 6, saw a Yasuo dive a tower the other day and get 4 hits off before the turret even shot at him. Was just in an ARAM and saw a victor go under inhib towers and get shot by two of them had time to kill a champion and just walk away still at 50% life? Towers used to be objectives, you would coordinate with jung and other lanes to bring them down why change this?

At-least 3 times in the last two weeks I have gotten stuck on minions and my champion just runs in circles....

Several times I have been dropped or disconnected at match making and end up in a 20 min Que because of the server (No it is not my internet b/c I am on teamspeak and steam and I have no problems) but when I have rage quit matches I have never been punished lol?

When I stopped playing this game the focus of the dev team was to stop snowballing (which I 100% support) and a focus on strategy, it could just be my perception but this does not at all seem like goals any more