Ryan Harrison, Sam Querrey or Donald Young are all young Americans who could greatly benefit from his coaching. Isner is too old and Connors shouldnt concern himself with anyone over 22 years old.
As for top 20 players Richard Gasquet, Tomas Berdych and Marcos Baghdatis could excel under him as none of them have a killer instinct or belief in themselves.
I think Conners should look at newbies who just broke through the juniors to the pros. They would learn the most.
It seems he really cares for Andy on a personal level as well as professional, which is good. Its tough to imagine him leaving unless Andy hangs it up. Roddick still has a bunch of good years left. I think Roddick would learn well from Agassi, actually.
horrible movers slow as hell 1 dimensional players like Queerey and Isner who rely too much of their serves they can't construct a point rally for more than 3 shots can't play on anything but hard courts considering their horrible results on clay;grass;carpet and rebound ace they can't hit good volleys drop shots 1 handed backhands nothing