When a mission has an objective set to require you to navigate somewhere, and has the objective visible, it would be neat if you could click on it to plot a course. That way if you have to take a detour to repair or whatever, you don't have to manually track down some sector three systems away - just click the objective in the mission log and bam. Have it respect the shift key as well, to let you append to the current nav route if the player wants to do so.

It'd be even better if it did this automagically for any specifically formatted sector name like "Pelatus O-15" anywhere in the UI text.

My terminal emulator does this for URLs and email addresses...