We had a situation where a griefer repeatedly rejoined our invasion to take all the repair parts so no one could repair. We literally had one of our officers kicking him as soon as we noticed he joined but he managed to grab enough repair parts that we were out of them at a critical moment.
There is no kick/ban feature for invasions. There needs to be. Our territory just got downgraded because of a griefer that we knew was a griefer because he does this all the time but there is no mechanic to deal with what he is doing. Several of us reported him. He does this all the time. Please fix this problem.