I think a cross server PF should be added because it can be rather difficult to find people in the same server as you to do certain things due to server population and time zone differences and busy real life schedules, especially with a static and/or FC, plus world transfers may make it even harder for other servers (though I think it depends on what server you're transferring to) to find people to do certain content with.

On the other hand, I see that difficult to add due to limitations, but even so I would love to see it happen soon, especially if raiding Alex Savage or doing extreme trials.

What do y'all think? Should it be added?