OK XXX, I grant you that's not as risky as the solid fixed wing type UAV , but I don't know about you but I wouldn't want to hit that thing turning on to final.
CASA does consider UAVs a potential hazard, hence their regs requiring their specific approval for ops above 400FT AGL, in addition to ATC approval if inside CTA above 400FT, and ATC approval within 3 miles of a controlled aerodrome at any level.