[douglas]

Better sensors are good. Combat support for ECM is also a must. You should get point-defense cannons up to at least level 3 or 4. If you went through with the plan to get armor 4, go ahead and get 5 and 6 as well, and start putting one of each specialty armor on every combat ship. Your other main priority at this point should be military science 2, followed by advanced military science for the training facilities. Oh, and finishing off the last two levels of PPB is also a good idea.

Edit: Massive shield generators are never worth it in stock. You can get more protection for less cost from weapon platforms.