Seriously, there's a reason why legendary primaries are used more in competitive playlists. (This varies by platform of course. In air shots are easier on MnK.) A HUGE part of the fun in Destiny is the movement, and Icarus is the gap between the fantastic movement and awesome gunplay. Otherwise, your accuracy literally goes down the drain the moment a pebble raises you in the air. So what it comes down to is for a player who can aim, fire, and control in-air movement all at once Dire Promise becomes better than Ace of Spades, Crimson, Sturm, etc. That is kinda ridiculous. And then for adepts, why would a good player sacrifice icarus for these adept mods that honestly don't make a huge difference? They wouldn't. Icarus needs to be an inherent trait on all exotic primaries and adept weapons. Bottom line.