I also vote against cross server interaction in any significant way... Too easy for it to cause unwanted griefing and etc. One of the things that gives the FF mmo's such a good feel is the close knit server system, and cross server interaction just brings out the worst in some people, since they know they can grief away and not suffer any loss of reputation or any consequences at all really, save for being kicked from that particular group, after nabbing a drop or ruining a party or whatever... Then they are just free to go on to do it again in another group.

Maybe cross server stuff would work if there was some kind of a ban for it or something... Like if you get kicked 3 times for grief related things, you're banned from cross server stuff for at least the rest of the month or something. Would probably work as long as the vote to kick had other options, such as kick due to afk, kick due to needing a different role or wanting room for a friend/lsmate, and then kick due to griefing, etc.