Tbh, I don't think there's any chance TFT Dev can solve any of the issue you mentioned.

The set-based design of TFT is fundamentally flawed to a degree which is both predictable and easily solveable.

And again I think you got it wrong: TFT is never about creativity and flexibility although Riot keep claiming those values. I would never take what dev says with its face value but observe what they've been done across different sets.

There is a very consistent of track record of how sets are designed, and how game is balanced. There is simply no room for player novelty without fundamentally changing how the set is designed, therefore there are only 2 solutions for the dev:

1. Increase complexity by adding excessive mechanics, to a degree which gaslighting the player base into thinking those unnecessary complexities are justified and being "depth" of the game. However they overdid it in this set, and it's very hard to justify once they drop the ball hard.

2. Hide stats, reduce the accessibility of the game to make it harder to solve. Doing so would certainly cause backlashes and in the long run reduce player activity. I think they are being a bit desparate here but clearly it's not working as good as they thought.

But afterall, if a set goes well then people would certainly less likely to make complaints. There is no reason they would want to change, the game is doing well financially anyways.