The basic idea is to allow sending rockets to remote places without actually being inside them.
Especially in multiplayer it would be possible to send resources "home" or to an expedition team on the same or other planets.
Landing pad naming
One prerequisite would be to assign names to landing pads via a console. The landing pads could be a fixed positions or stored on rovers until needed.
I would suggest to simply add the autopilot functionality to the hydrazine booster. Just add a panel to select the destination from a list...
If sufficient fuel is available and the platform is deployed and not occupied - press start to launch the rocket