I have found out how to add people to the banlist, but I do not fully understand it.
What I would like to achieve:
There are some people who just seem to ally for points. I do not mind informal allies or even explicit allying when a player gets strong (although I would not approve it). Playing with these folks is simply stupid, you spend some time in building up your lands and reinforcements only to realise later that they are all allied. Its a waste of time and I would like to avoid it, by adding all these players to my ban list, so that they do not join my games as well as that I am alerted if I am to join a game with some of the blacklisted persons.
Can this be done with the current ban function? Or can we have some kind of earmarking of users?