What if there would be a tax system that you had to pay to a faction ruling over the planet. As long as you pay your taxes you are safe from the attacks but if you don't pay those taxes the attacks start. The taxes would be determined by the value of the base as OP mentioned. There could also be taxes for groups (where the tax rate exponentially increases with higher player numbers) to incentivize solo players and smaller groups. This could also motivate players to be more industrious when it comes to the whole trading aspect, as that would be another good source of generating income.
If you guys could balance it to the point where large groups just have so much trouble paying the taxes that it would slow them down enough so that smaller groups can keep up, I think that could really benefit the game.
If you guys could balance it to the point where large groups just have so much trouble paying the taxes that it would slow them down enough so that smaller groups can keep up, I think that could really benefit the game.