My Opinion on Balance: Don't Keep Shaking Up the Meta.
I don't believe that you should keep shaking the meta up by buffing and nerfing things slowly but surely. And to clarify, I will post a link to a comment about this same situation, which you can view here
Keypoints in the comment are the following:
The number one problem with this game is that Riot buffs/nerfs things in cycles to shake up the meta, with the INTENTION of shaking up the meta, instead of actually balancing the game
They want to "keep things interesting" by pushing certain champions and strategies out, and bringing others in, in cycles. They don't actually care about having a completely balanced game.
I want to play a balanced game where I can pick any champion and have an equal chance of winning based on my skill with that champion. Not a game where Riot dumps everything into a box and shakes it around a bit, and now my champion X is weak, but champion Y is strong, so I should pick champion Y or simply stop playing until Riot shakes up the box again.
I can honestly say I agree 100% with them. The game should not have a "meta" and should not promote a list of champions, while frowning on others. ALL champion should be an option, and be evenly powerful if you want to have a fair and fun game.
So I believe that you should stop releasing champions until season 5 completely, and after that, you should avoid trying to make things too incredibly unique and overloaded. Look at Kindred's ulti. It is incredibly broken, being able to negate death! Topped by a heal for everyone? I would have thought you learned when you released Ekko, that too much is BAD. B A D. Although, I will admit, that you did make a success a while ago, with Bard. He's extremely fair, fun, and balanced and is a great model for "a success"
Anyway, stopping champion releases will give you time to focus on champion balance. Instead of nerfing champions, create a "Super Patch" for Patch 6.0, in which at least 30 champions are given strong buffs to their kits, and some are re-tuned to NOT FIT THE META, but to be able to break free from it. The 30 champion buffs are a good start to rebuilding the champion roster. Champions that were once great picks years ago are now back on their feet, but not to an extreme extent.
Following that last point, I'm really hoping the Taric rework will not overload him heavily, or it's just going to be another "oops we did too much" just like Fiora, Darius, and Ekko.
Best of luck Riot. Please try to consider this.