It's really great to see Descent's various design quirks broken down and addressed, almost as if Antistone understood them better than the designers themselves.
Allow me to contribute the suggestion that Teleknesis should be a general ability with ranks, with similarities to Knockback, such as being counterable by way of the Unstoppable ability and less effective against larger creatures. The skill card would thus only need to say "You have the Teleknesis 4 ability" or something along those lines.
I'd similarly take many of the powerful skills and powers that various characters and skill cards offer and define them as abilities so that they be expanded farther than the space on a card will allow, as well adding the benefit of making it easier to designate countermeasures against them. It would also open the door to finding multiple ways to access them and stack them (similar to how folks try to find ways to stack Pierce). Kirga's anti-spawn ability could simply be called "Tracking" (or "Tracking 5" if it were assigned ranks), Spiritwalker is another good candidate.