Groundies perspectives are every bit as valuable to the climber, they see the tree in its entirety, they see lean, limb weight bias, they see the new guy walking into the drop zone with his head down, they see how far the spar has to come down before we can flop it...list goes on. I'm big on getting everyone to contribute with feedback, opinions, solutions, etc. Climbers aren't fucking gods, despite what a lot of us act like. My old boss used to wait angrily 3 ft in the air for me to unhook his climbing saw before he hit the ground, then he'd drop his gear at the base of the tree, get in his truck and drive away...