I guess you only mean the part of chilled that is talking about movement ? It is also a possibility. I have chosen to freeze entirely mostly because of hamstring shot. I reworked it in another mod I'm still working on. In this mod you can use hamstring shot (movement /2) once per turn.
This bit sounds interesting as well, but I don't know if it is implemantable:
A chilled creature can only use their action or bonus action on their turns. If a creature can make multiple attacks per turn, they will lose one attack for the duration of this condition.
In Solasta chill slows just the movement, I think. May I ask: Did you think of "Frozen" to just restrict characters from moving, or a complete paralysis (skip turn) like in D:OS2? If it's just restricting movement, that I think it would be fine.
