The reaction system from Solasty is dire and I am strongly against all pop-ups in combat.
The problem is that the number of pop-ups will increase significantly the farther in the game and also as the number of enemies increases.
I can already see the number of windows when you try to fight the goblin camp.
The situation will be even worse if you have a team of reaction-based classes.
I could survive it if we could reduce the number of available reactions significantly by converting most of them into bonus actions.
What I certainly wouldn't want is asking about using smite with every attack.
I don't really want to see a popup every 5 seconds.
If larian managed to introduce reactions without interrupting the game with pop-ups, it would be great, but if the alternative was the Solasty system, I prefer it to stay as it is.