Some kind of middle ground platform with the largest commercial multicopters as a cost effective base but with some jamming resistant communications would be the sweet spot. Perhaps 5kg payload and a few km range and some autonomy such as being given permission to autonomously drop munitions on specific target signatures in specific areas.

If it can be entirely radio silent within the last mile radius (records video for later transmission, finds targets and attacks without intervention) then jamming would be extremely difficult.