It's just a fact that a 100% accurate reaction system will never be good in a video game. It either destroys the flow of combat by constantly prompting for every little meaningless detail or fires off the reactions at wrong times, or not at all when you need them to.
Unless you add "For me" to the first sentence, I'm not sure why it is a fact. I completed Solasta a couple times and absolutely enjoyed the increased control from reaction pop-ups. I have no trouble admitting that not everyone likes it done that way, and I have no objections to keeping some reactions automatic.
I'd like to see an example of reaction Counterspell that is usable without automation (it can waste the spell on something trivial) or an activated ability (how can you counter something on your turn when you don't know if it's going to happen).
Of course you can simply not implement any reactions that can't easily be done as an activated ability. I simply do not understand why a pop-up is such a big deal in a turn-based game.
