Not sure why you want to remove knockback on IR. I don't think it's a good idea to have things knocking you back in your very tight and important dps window. So I don't think that should happen.

As for Nascent Flash requiring no target, and Mythril Tempest applying eye, I'm all for. Also, it would be nice if they could make the aoe combo like pvp - where we Mythril Tempest and then Steel Cyclone. It feels much better and is visually more appealing to me.