UAV's with limited resolution are only going to be of use with thermal imaging systems to reduce the effect of cover
hence the reason that all the UAV footage you see is from Thermal systems, they do have 'normal' wavelength equipment as well but they're not as 'effective' in spotting targets as the thermal and are normally used for visual identification before engaging targets of opportunity.
but good luck getting that into a cheap uav :laugh:
in the urban environment UAV's can be of some use with normal optics, but be realistic, it's airsoft

the day that systema unveils the airsoft mortar that _isn't_ just a tube and a moscart then we're talking..