We have 14 somewhat active members (rest have been offline for more than 4 days or have stopped playing all together), we don't have nearly as many count claims as you claim we have. I have 0 count claims myself after losing Prusa to you. You have 5 yourself, a long with 4 vassalized Kingdoms (before they were all liberated in the recent patch).
I'm not convincing people to stay in Milan at all, it's their free will to choose the kingdom they want.
Not that it matters though. You were greedy now you pay for it.
You had every single seat in Byz, Wallachia, Bulgaria, Serbia, and Athens filled with Italians, it only makes sense that they are claimed and held by Slaviks. You do not see Slaviks making claims in Italian, or German lands, so why should you claim half the damn world. The only reason you dont have the claims anymore is because i either had them taken from you, or people reached out and began finally playing something other then Milan. The vassalized Kingdoms are all Slavik, of which are all not being controlled anyways(Wallachia has a singleplayer, who does nothing, he might as well not play at all).
you dont need to convince them, you need to urge them to get the hell out, and spread out.
I dont see the relation in greed here that you see, but whatever. It actually would had been quite a fair fight against Athens, as i have 2 other players besides myself and they have 3 as well, so really it would had equaled out and they probably could have won the fights anyways.