I'm new here, but I'm not new. I've been off-roading and boating/sailing most of my life and know how some folks respond to the activities of others when they perceive that it is encroaching on their personal space.
From the rancher who buys a place near a long standing dirt bike riding area and then complains about the noise, to the pontoon boat owner who just wants to anchor in peace and enjoy the day, but gets violent when jet-skiers invade his tranquility, I've seen some interesting situations arise.
So I have to ask, what is the purpose of the slogan?
If the purpose of the slogan is to convey a message to those who don't happen to share an interest in flying these devices then maybe something like # Irespectyourspace or #flywithrespect - alongside a picture of a quad/phantom - something along those lines?
If it's just to promote camaraderie amongst the forum members and others who fly then maybe something along the lines of "super altitudinem nubium" - I know some guys who served our country in the 101st Airborne and they just love mottos in Latin. The translation for the above is "Above the Clouds"
From what I've read here so far, dirkclod is absolutely right, you have some very clever members here, perhaps they need a bit of direction to get the creative juices flowing?