Yeah, I bassically want to do the same thing.
A beam, with a small cone of view, lock on, and its is like a sniper rifle, shoots long range in a burst that lasts as long as your energy and does good damage, but eats all of your energy after like a second or two.
It would probably have a special "artilary" fighter to go on, something that is fairly week, slow, has no other weapons other than its massive long range capabilities.
Anyways, SCP guys, maybe give this a second look? It could have some awesome capabilities if you can pull it off.
Oh demon, I'll try your stuff tommarow or this weekend. I've only had time to test a mission so far this week due to massive amounts of school work and finals next week. Sorry dude.