right now the game lacks the option for fleets to intercept the enemy fleets for example while moving off starlanes.an automated deence feature intecepting fleet closeing near systems or at least the ablity directly to target a fleet on the move would be great.

Have you used the block button, which is the icon like a globe with a shield next to it? It does some of what you describe. A fleet which is on block will prevent any other fleet from moving out of the system. More here:



http://forums.amplitude-studios.com/showthread.php?3061-bug-roach-motel-scouts-check-in-but-they-don-t-check-out