Evaulu8tor your idea of a STOL fixed wing type actually has merit how many chinook hours are wasted in flying hub spoke type flights that an aircraft could do better but the payload is to small to be practical for a herc and how many herc sorties are there to lift loads just to big for chinook?
A STOL aircraft like C27J or CN295 might be a solution. How common is C130J and C27J in terms of equipment instrument layout proceedures etc?