Step 1 is fine, there's an appropriate amount of Birds of Prey to kill, adequate respawn rate.
Step 2 is excruciatingly slow in comparison to step 1, there are far too few spawns and too sparsely populated throughout the marked Spawn Territory. It needs more Cruisers and fewer Escorts and Birds of Prey on this stage.
Stage 3 is quickly completed, however the Battleships from stage 4 has a tendency to spawn / patrol too close to this stage, the population density of the Battleships could use a thinning spreading them out further on their Spawn Territory.
On Stage 5 the nebula or whatever it is, is a complete eye sore with the brightness. It's almost impossible to see the ships, let alone anything else when fighting there.