Focus on keeping our edge in firepower and mobility
Keep edge in technology
“Staying on the cutting edge of technology requires a large amount of resources though, since it's an ongoing process, which includes more than just developing the products and upgrading what we have, it includes espionage to get any secrets other people have, counterespionage to keep them from getting ours, defenses of our research facilities…”
Minimize targets for the enemy (how?)
Lure main Enemy force into Ambush?
“He who defends everything, defends nothing”. In terms of defensive tactics, focus more on response, then anticipation. This will free up more resources for offensive fleets. Ergo Have a defensive fleet patrol clusters of systems, and can respond on the fly to any sudden attack on the home systems.