What is the utility of the "Ready"action? No asking sarcastically just trying to understand.
You don't want to move your fighter because he is blocking a door to protect your weaker character. Ennemies are not engaged yet and you don't want to loose your action : you use ready and plan a melee attack on the first ennemy that engage you.
You don't want to move your wizard closer to the ennemy for a reason so you use ready and cast the spell you defined on the first ennemy entering your range.
I guess there are a lot more use in the TT but in Solasta it is basically an improved overwatch skill, which is always gpod to have in turn based games imo.