I love "Line Move". Its very you draw the formation with right click, and then units follow the shape that you drew. Every RTS or RTT game should have this! Its a cool way to move units around the map, without requiring massive micro!
With line you move you move space ships around effortlessly. Then can fly in lines as well as form arcs. Arcs are great when you need to surround an enemy and have all your ships shooting at him while he has only one ship sticking out. Same logic applies to surrounding. Because in Istrolid you can dodge things, you can wiggle your stuff that also works really well. As well as one click capture mechanic is very old.
Any ways you can watch the video here, where you show off all of the cool things!