I think it's been said that Crimsons need something to do other than stand
there. How about giving them an active defense skill?

Give them a skill to defend against particular weapons (i.e., defending
against Lblades or sblades, polearms, bites etc). Or, perhaps even more
involvement would be a way to defend against different damage types. Make the
skill have a one round skill time so they can switch easily. Then, they would
have to try to predict what spell a mob was casting and how often and whether
or not they should switch back to defending against the physs between blasts.
Is the mob going to kick next or blast? What do you defend against?

To make it even more interesting, you could require some sort of non-magical
reagent (like, canteen with water to help defend against fire, etc). Give the
Crimsons the skills necessary to make the reagents so they'll have something
todo other than camp and masterbate.