So.. I'm going to add my suggestion for a future addition.

ETA to target system.

You ever have to make your Advent or TEC fleets make 4 or 5 jumps to get somewehre?  Well this little handy feature will make figuring out how long your planet has to survive before that enemy fleet lays waste to it.

Somewhere in the info box of a ship have a little clock counting down that will tell you how long it will take before your fleet arrives at the end point of its jumping travel.