It would be interesting in HW2 if warping space was taken into account. Ships could be deployed with graviton emitters to warp space.
One cool example: The enemy base is 10 minutes travel time away....just shrink the distance! And when he gets ready to attack you, stretch it!
Create a large "pit" in space to curve the path of approaching ships or even get them stuck for a minute until their engines overcome the gravity.
Or even better, have a one-time use ship that can create HUGE tidal forces in an area to destroy multiple capships. However, the field would take time to engage, giving enemy sensor ships time to recognize the distortions.