Why not replace paratroopers with colonial troops? Worse stats than regulars, a little better than militia, and does not consume supplies, or very, very low supply consumtion?
This would solve the problem with colonial troops holding out long with the colony cut off - like von Lettow-Vorbeck's men - and then you won't need a huge pile of supplies - which the AI probably would prove inept at defending...
This would solve the problem with colonial troops holding out long with the colony cut off - like von Lettow-Vorbeck's men - and then you won't need a huge pile of supplies - which the AI probably would prove inept at defending...