Just chiming in with my thoughts.
Valen and Instigator can tie down and engage enemy squads, while the Tie/B cannot.
You can never attack Valen since the Tie/B is there, therefore Valen is an illegal target.
Thus, an enemy squad can shoot Instigator because the Tie/B has Heavy.
Valen's "cannot" is an absolute golden rule and overrides any other FAQ or RRG. Essentially, Valen is removed from the equation in regards to a legal target for a squad to attack.
I have no idea how FFG will rule on this, but...
Wouldn't this basically remove Valen's engagement rules? Essentially making him heavy?
It does not make Valen essentially a Heavy squadron. He will still prevent movement barring other keywords and so on.
Why should Valen's ability negate Heavy?
Edited by Frimmel