For me this 5 minute duration is one of the most annoying aspects about playing a captain currently, but not far behind that is blade brother/heralds. I feel like I almost have to recast blade brother just as much as motivating speech because the herald is unsummoned for whatever plethora of reasons, or gets lost or stuck somewhere, or whatever the case may be. It's starting to feel like half the time I spend playing on captain is just activating those two buffs. Even though Captain is my favorite class in the game, it really does feel like a breath of fresh air sometimes playing on another character just because I'm not constantly needing to rebuff every few minutes. When you add those together with Captain's rather sluggish animations, it's not hard to see why some people find them clunky to play.