This rose is threatened/endangered, so it would be excellent if those who have suitable conditions would grow it.
See list of threatened/endangered native US roses here: http://plants.usda.gov/java/threat?txtparm=rosa&category=sciname&familycategory=all&duration=all&growthhabit=all&wetland=all&statefed=all&sort=sciname&submit.x=61&submit.y=6].
This is only apparently listed for the highlands region of New Jersey, so the species isn't really considered threatened over the vast majority of its range. It is still a nice rose species and people in suitable parts of North America should be encouraged to grow it.
The beauty of rosa blanda is that you don't have to do anything to it. Dead heading will not make a normally once blooming rose repeat. It will also stop any rose hips from forming.
