I bring labeling schemes in from commercial/hospitality and large scale residential that mimic commercial more than they do residential. Residential projects that had a headend plus three to four IDF rooms...labeling and proper planning are crucial. That labeling scheme scales no matter the size of project and is not short-sighted in nature. Anyone can walk up to any wire on any end, compare to the cable plan and know exactly where it goes and where it comes from.

My labels show rack space #, not a device which can change. If a cable happens to change rack space, it gets re-labeled and the plan in updated.

Traditional residential label schemes fail here:

You have a cable labeled "DVD SPDIF". 5 years later someone shows up and there isn't a DVD player to be found in the rack.

You have a cable labeled BR2 Bed Left. 10 years later and two new homeowners...that bedroom is now Her fur storage closet.

You have a cable labeled Timmy's TV...you're fired, new company, new homeowner...who the hell is Timmy?