Apologies if this has already been suggested elsewhere...
I would like to see another layer to battles.
Why is it that in order to knock out a few nosey scouts or a offensive space-station, I have to declare war on the owner.
This wouldn't happen in reality, where races that were hostile to each other would certainly take the odd pot-shots before they formally declared war. Declaring war up front is a rather Victorian concept.
In the game, it could arise that an race could keep knocking off some of the opponents assets before they loose patience and commit to war.
Perhaps it could be programmed to allow opponents that are at a level of "hostility" with each other to do this.
It also means one may get away with it if the AI opponent decides it is too busy (aka too scared) to respond with war!!
What do others think?