I think the AT-ST needs an errata to make it a little more appealing:
"Discard ANOTHER support card from play"
Having to pay 6 resources is hard enough to accomplish. But having it destroyed by a cheap 2-resources "Cunning" (which is an ability, that cannot even be removed except by defeating the corresponding character) is just ridiculous . I don't like that buildt-in autodestruct in an expensive card like AT-ST, which has in itself no extraordinary dice-values to justify that. The AT-ST just bears too much punishment against itself... not knowing what future expansions will bring (but I bet, that there will be at least an event some day , which will be able to do exactly what cunning does).
This little change would surely not rise the AT-ST to the top cards, but a stylish Star Wars representative will see some light ...eeh, darkness, I mean.