Just merge all the darn servers in a single gigantic shard. Technology allow this. The surname system allows this. The multiple guild system allows this

This would give us some definite feeling of "world server", a feeling that very few games can bring. Let the people use linkshells to build their own networks of communities, instead of that arbitrary split in servers.

And yes, this means instancing everything to hold the charge. Instancing is not a problem, since anyway FF14 isn't sold for its lusterfuck groups of hundred of players (like a RvR oriented game would be). Non-instancing bring only technical problems on PvE games.