I dont think there is any bonus to having your scooter dialed, I don't have mine supremely dialed but at the same time it's not got masses and masses of play
as long as nothing is loose or wobbling, I don't care.
I guess just because i work at a scooter shop i can always be available to tools to make my scooter dialed. It does piss me off when i dont have a dialed scoot, im super anal about it haha just because i know i dont have to have a shitty sounding scooter.