I may be a small minority but i think angel of light is a perk with a lot of potential but often executed poorly. I like to use it with my fusion rifles w/ icarus to give myself an aerial advantage. Kind of gimicky but when done right it has a high percentage of success. My biggest critique to the perk is that it is held back by how it's activated. ADS before centering screen on a target is sluggish and disorienting by itself. Now try doing that mid air and it's plain frustrating. I think it would be nice a gesture and a fair adjustment to have angel of light activated like an evade (B, B or O, O) giving time to center the screen then ADS. I know i may be catering to the claw users and people with elite controllers but this perk is under used and could use tweaking one way or another.
It's especially effective against people chasing you around corners. I turned and jumped off the heavy bridge on the cauldron and my enemy was looking for me on the ground. I was not on the ground....
I do like that idea of activation you have. Double crouch. It's not easy following or readjusting a shot midair while ADS. You somewhat lose the advantage.