If that's what you are looking for, you shouldn't be looking at the single player turn based tactics genre. The flexibility you are looking for wont be found in a game restricted by rpg elements, especially with turn based mechanics. Every rpg suffers from this, including real time ones like dark souls where mechanics or the master key is discovered and then the game can be trivialised to the point where people are speed running it with no gear within a few hours.
I suggest multiplayer games like rts for a more fluid experience. Its possible to simulate optimal human like behavior in tactical games nowadays with montecarlo tree search pruned by neural networks (alphazero), but it requires an ungodly amount of gpu resources for a sufficiently complex game, although admittedly, once the networks are trained, its relatively cheap to execute. However, it hasnt really caught on or been accessible in mainstream gaming yet so i wouldnt hold my breath.
