I have mentioned this in the gameplay feedback but I think it deserves it's own post.
It seems that the main thing anyone needs to do to win any game at any difficulty level at this point in time is to create a ton of frigates and constantly attack the other players. Eventually add in a capital ship and a few siege frigates and boom! the galaxy is all yours.
There need to be better deffense options, there need to be ships that can take on 3 light frigates and win without said ship being a capital ship. The player should have to think out the composition of his fleets, not just spam light frigates.
Overall I am very impressed with Beta 2, and with 221 more days to go I know many things will be tweeked/changed/added. Combat needs to be a priority though.