Sins of a solar empire has come a long way, and entrenchment continues this.
A few things that I think need to be changed are:
1. Mines: I left 20 Vasari mine ships in the suns gravity well and came back to them later on and found 5000 mines!!!
2. Starbases: They are too easy to bypass. Personally, they should have enough range to cover one phase lane. Also, they should have an upgrade to make it impossible to phase jump to you other worlds via the gravity well with the upgraded starbase.
3. Kostura Cannon: This thing is insanely overpowered now; it does hundreds of damage, disable every enemy in the gravity well, and make a phase stabilizer node. I invaded a hard AI's homeworld with one capital ship and 20 frigates, they had a complete array of defences (including a starbase) and two capital ships. Guess who won? Me.
4. I have a strange glitch where ships disappear and reappear randomly. I have an ati HD2300 m graphics card, 4 gigabytes of ram, and a 2.4 ghz mobile penryn processor.