This message was in response to a complaint that Eye in the Sky was a mandatory upgrade. I think this solution would solve that while allowing eye in the sky to remain its own unique upgrade.
now, one way to make eye in the sky not be mandetory would be to change the cooldown structure of the grapple.
make it so the cooldown the total grapple time remaining (much like the jetpack or wingsuit).
so you can freely replace the pole in front of you, regardless of if you have eye in the sky.