If top ropes were giving primacy most of the bolt issues we deal with today wouldn't carry water. We'll never go back to that. Steel is here. Steel is real.
Munge, please expound, I don't understand what you are saying.
If "leave no trace" is part of the reason to designate a FA to a TR ascent then documenting them and giving primacy to the TR could be the green thing to do. That was the idea behind stance only free ascents. It is very limiting to the proliferation of routes and demands an extreme price in time and effort to practice. On Romper Room, one bolt took a substantial part of two trips to place. If stance placements had ratings a 5.9 might require a 5.11 effort for placing a particular bolt.
Then there were the multitude of of steep, and "better quality" gymnastically challenging routes established ground up. Should these have been left top ropes? A very small number of Pinnacles climber thought so.
Instead of rap bolting these steep climbs, climbers employed an A3-A4 effort to place a protection bolt, by hanging on a hook on questionable rock. These practices and techniques cemented a fierce ground up ethic for these new climbs.
Nelkins makes a few good points, and to add another to his... Consider before spending 4 to 45 minutes TRing a line, is it worthy of leaving untouched, for a future muli-hour/day/week/month adventure?