The best non-ch krevol prenerf was the Mountain Krevol. This charred krevol just didn't compare to the mountain variant. Just look at both of their kinetic resists--the mountain version topped it.
I know that one of the krevols at one time was non CH useable, and had a ranged attack. I swear it was this one. Perhaps it was changed in a patch. When I first started doing CH the first time, a friend gave me one of these, an dI remember being surprised when he was spitting with a ranged attack at paralopes. He also helped me to bring down the lairs much faster as well, doing good damage. I'm thinking that, even if this creature has been nerfed, it would still be useful to a new CH.