Actually not so many unit need access to it.
The ability should definitely be replaced from Stug -E.
It could also be replaced Puma or even the Elefant.
We surely can discuss about this, but at the moment I don't think that any version of TWP is overperforming, so for start a simple name change would be nice.
Suggestions:
- turret lock = target turret ring
- blind = target vision slits (would explain that the driver can't drive due to panic and missing orders from the tank commander and gunner can't see the targets)
- stun = target weak point (there's no real logic for that ability though other than the crew panicking)
(what other versions are there? can't remember)
Changing/removing abilities might cause other issues with the unit that uses the ability and could be a project for the long run.
And to get to your points: What do you want to replace it with? Or do you mean remove?
I do like a TWP ability on the Puma (funnily enough I can't recall if the Puma has a stun, blind or something different). It enables the Puma to be useful as a support unit even after the medium tank phase has begun, just like the Stuart.
StuG could do with a blind in my eyes (not sure what it has at the moment), since the PaK already has the stun. Elefant's TWP could also be removed in my eyes.