Guesting
I’m wondering this too, not all my friends are on the same server and with the 24 hour timer I can only play with some of them.
Guesting needs to be implemented on live already. I have multiple friends across various servers that I cannot play with when I want to because of the 1-day lockout on transfers. That, and my guild doesn’t tolerate xfers to the opposing wvw servers during the week, so that makes my particular situation even more painful.