CotD is bad with broadsides.They're VERY good outside our CD's. But why in a short duration encounter would you waste the bulk of your dps, especially with run through relics, into a poor burst roll. 1 single roll of anything else besides broadsides and buried treasure>both of them during ar+cotdb. Plus, in a short duration encounter, you're only going to get 1 usage in (unless you have bad dps with you and rolled true bearing during burst), so why not spend a few extra rolls? i.e increasing stacks of alacrity. The only time I could see it being beneficial to blow cd's in poor 2 buff rolls is if you have a proc trinket and you notice the proc on pull or if you have a group with such good dps and hero on pull that the boss dies in like 40 secs. lol
My point is, this spec is no just face roll 2 buffs. Maybe for the more casual player, which I believe was blizz's intention. Make the spec more rewarding to the players who "play it" but still make it viable and playable for folks who don't. There is NO dispute that adapting the combat flow to the rtb buffs creates better results, ESPECIALLY regarding Broadsides and Shark in The Water with pistol shot/ghostly strike usage outside cd's.
But wouldnt everything else you said be true with any buff except shark infested waters