It's come up numerous times where I want to fly but the area is restricted in some way. Most being in the city, on the outer edge of something, like a small airport or hospital with a helipad etc. The drone won't fly. In all those instances all I would really want is the drone to fly about 20-30 feet off the ground to get a nice overhead shot. Clearly that'd endanger nothing and certainly not any aircraft etc. Buildings are almost always at least 15-20 stories in these areas which would be over 100 feet. So is there any option when asking for a clearance to set the height low as suggested here and be approved?