Where is League of Legends going

I remember when i first started playing LoL early season 4. I used to have so much fun just playing whatever I wanted wherever I wanted. The point of having such a large champion pool for us to play is to give players a diversity of gameplay. In my opinion that was the best part of league. Nowadays there are only a certain pool of champions suitable for jgling, support, adc, top, and mid and with these new tank metas or mage metas or whatever meta it is, I feel like there are less and less variety of champions that are "viable" to play. This just might be me and I might be completely wrong, but league these days doesnt feel the same as it did when I first started in season 4, as in how fun the game is. Just my daily rant :/