I've heard before that 6 mo's is a fair amount of time to allow someone to try their FA project. I tend to agree with this time-frame. I'd say it goes for a trad line someone discovered and spent some time cleaning, to a sport climb they equipped.
There have been cases I've heard of where the equipper tried to assert "territorial rights" years after bolting, and this is bs.
It's mainly public property we're all dealing with here, and giving 6 mo's of "private rights" to someone is really just a courtesy; I think it's selfish to *expect* more.
btw, i don't think there is any sort of "ground up" ethic at vantage, beyond what the late bill robins tried to endorse.
pull your hangers, reinstall when ready to try, if succeed, you get fa, if not, pull your hangers, repeat...
if someone puts their own hangers on, fine...if you leave the hangers, its open...