Mostly just personal opinion, but after playing around with the subclass since the changes I find myself activating the perk more to amuse myself than for any actual serious use. The accuracy bonus doesn't seem to be any greater than what Icarus Grip gives me, and the two don't seem to stack either as far as I can tell. Icarus Grip, however, is a permanent in-air accuracy benefit so to me it's more valuable to use than burning a grenade to get a temporary version of the same benefit. The extra flight time can be fun, and I was surprised at how long you could maintain it, but it's also a liability to hang around in the air too long when taking a lot of gunfire. Kind of defeating the point of "aerial superiority." Might just be my playstyle with top tree Dawnblade of course. Been having fun with a low-flying agile approach that flies circles around things while keeping cover nearby. So relying on temporary buffs and long-term flight isn't ideal anyway. Honestly though, if the class is really supposed to be about aerial combat then the accuracy bonus should be a passive benefit of the perk. Because I really don't think it's worth the grenade if I can get the same effect from a mod. If anything the active half of the perk should give something to help airborne survivability to make the grenade cost worth it. Kind of curious what other top tree Dawnblade players think about its usefulness though. Maybe it is just a playstyle difference, and what I consider useless to my playstyle is uesful to others'.