Good idea Tirion.
Why don't we adda bit of strategy to it by saying that you can only move 3 spots at a time after every battle. that way, you can't jsut get reinforcements immediately, you have to manuver yourself around on the map, and the galaxy. If you work together, and you use a bit of strategy, then you can force 2v1 or 3v2 or 3v1s and the sort. That would also prevent teaming up, since you'd have to wait for others to arrive in order to gain help, rather than just collecting all your forces and moving forward on a map with your allies. The movements could be turnbased, and randomly picked at the beginning. Maybe as you move up in rank you can move a greater distance or something.
Peace is but a shadow of death,
Desperate to forget its painful past.
And though we hope for promising years,
After shedding a thousand tears,
Yesterday's sorrow constantly nears.
Unless a grain of wheat falls to the ground and dies it remains alone.