Me and a friend just got done with a 6.5 hour game and it was AWESOME!!!
I haven't had this much fun with a NON-MMO game since Galactic warzones in the BBS days.
I'm happy you had such a good time! Over time those tactics are going to evolve and become much more complex. If you haven't discover already, battles in neutral territories (Gas giants, storms,stars, etc..) can really turn the tide in a game. Just wait until we get the other races in