If we move, we can move the items easy.
We could "sell" our guild (really the name and the bank) giving us money to buy new tabs on the new server. The sell is in-game using in-game gold. I see it a lot when people are selling their bank toon's guild.
In "engrish", move all our items out of the guild bank. Everyone leaves/gets kicked and the selling commences. The last tab was I thingk 5K gold. Sell the guild for 3-5K and we have money when we move servers to buy new tabs.
Just my 2 cents.