I agree that a legacy or trait to further boost aoe skill targets for forced taunts would help a lot. That really is the only major flaw I can see in cappy tanking now, as our survivability has increased a lot. That said, I wouldn't want to lose the Pressing Attacks target legacy, as I do use that and know many other Captains who do too. The trait that gives +3 targets for Threatening Shout should give +5 at least.
-Bel