Unbalance In League of Legends

I recently took a break from most of league of legends and when I came back I've been surprised with what feels like a very unbalanced game. It seems like there's way to much of a champion specificity within the meta (aka very limited on what you can and can't choose for viability) and I get there will always be unbalanced champs and Under powered champions but I feel like it has gone to the extreme. A game should encourage people to try new things but its punished heavily with the meta champions. Another thing that bothers me is the unnecessary updates that change things that don't need changing. For instance, mage update was unneeded and instead just change specific things about certain champs rather than an overhaul into many mages. I haven't done all the research and still don't know everything but I'm just very unhappy with the current state of league and want to hear other opinions and if there is something in the new meta i'm missing out on. Anyways that's just my thoughts on league right now. Any great discussion is appreciated

EDIT: Here i'm just gonna list a few things on my mind when it comes to balance, one of the main things i feel is kled being a confusing character and having some broken things with the interaction with his partner. Skaarl seems way to overpowered because of how he can regenerate over half of Kled's hp during a fight which can be a game changer and happens way to often in my opinion