Isaiah is one heck of a shooter. Among the best at what he's best at.
That high pick/pop over and over, with IT as first and second option and shooters spreading the floor, will help Lebron get some rest and relief. IT can run all over the place with pick after pick off the ball when Lebron runs the half court. And they're used to not getting any defense at the point by now, so they will be better with iT just as we are better without him.