This skill should not even need another party member to be used. It's useless if you solo, but then most people say use your chocobo. That's not the point. The point is make worth using. Bloodbath would fix all of this, and I honestly don't know why SE decided to take it away from warrior to begin with, and then give it back in a worse form.
Remove Nascent Glint mechanic and increase the length timer to 10 seconds and this skill is fixed honestly. Change it so you can cast it on ANY party member and would fix the OT aspect as well.