I don't mind the "work"; the problem is that you cannot do it remotely, so if you want to send you're carrier more than a tank's distance away, you have to follow it with a ship.

If there was actually an auxiliary fuel tank, I could remotely (carrier management) schedule jumps until the tank(s) are empty. If the (aux) tank was large enough, for instance, I could start it off from bubble to colonia, whilst I fly my exploration ship ahead (it's faster, distance/time), exploring away, and play around in Colonia, until my FC showed up (as I scheduled jumps ... or, imagine this, being able to set a route...)