I was thinking that maybe instead of just being able to attack planets you can choose to blockade them which lowers the resource income of the planet and possibly reduces defense? But the player who is blockading can be shared to the rest of the legion and attacked? Much like the NPC's which can blockade your planets

What does the person doing the blockading get? Gotta be some incentive for me to put myself in an alertable position other than to just tick someone off.

A share of the production. Cannot be used on invunerables.

Yh so maybe over time you get a portion of the resources that they are losing, also there is the incentive that you reduce their defense so that its easier to attack and invade later, although possibly only reduces defense by a maximum % over time? so maybe gets to 30% reduced after 3 days and then it stays at that level? Just thought something like this would be good to introduce so you can get resources other than your planets, so maybe invincible planets can't be attacked but can be blockaded? Dont know just seeing what people think, all contributions appreciated