It would be interesting to see a click time event mechanic, it would look like this, when the player performs a skill, a small bar with three colors appears, something close to this:
As soon as this bar appears, the bar fills with red -> orange -> green, this at a bit fast speed, the player has to click the skill button at the right time if it is fast and click at the right time, he gets a bonus if not he gains a disadvantage.
-if it is red it does less damage and there is a chance that the skill will fail,
-if it's orange, skill damage comes out normally with no chance of failure.
-If it is green, the skill does more damage than normal.
this just example wouldn't need to be the same and just to explain the concept.
I find this mechanic very interesting because it increases the tension of combat and also because it makes combat more dynamic.