In an age that the likes of yourself and I could only dream of (computers, efficient planning)...
Oddly enough, that's precisely what we've provided to the Luftwaffe / RCAF A310 MRTT progamme - which has now been in operational service (including combat proven experience in both Libya and Mali) for over 4 years...and is now being upgraded to include further mission planning / management options in support of more complex mission scenarios.
Which is more than can be said for a certain other MRTT programme....
Hecho en Espaņa = no funciona!