I think there would be considerable balance issues.
Just one example: Dk - warrior, bye malform. If such a skill is implemented at all I'd suggest massive lag for the warrior (similar to a missed bash). Possibly disarm into inventory for noremove weapons, don't like the random two rooms away option.
Basically this would be a weaponseize upgrade, so should go with the same weapon choice.
I agree though that a warrior should have SOME skill to do beside kick (which rarely anyone uses) if he is fighting someone with a noremove, noremove shield, protective shield and flight. Now it is mostly dirt kick, wait. Hmm, perhaps we should just give kick some fun side effects (random area is hit doing random minor stat changes like str or dex -1 or possibly something else entirely).
I used to play a mud where you could kick, kickr, and kicks. Kick was normal, kickr did a BIG roundhouse kick, less chance of landing but massive damage when it did, and kicks did a side kick to the stomach which did less damage but made it hard for the target to concentrate, kinda like a super mini fury.