Until 6 happens, 1 and 2 will be extremely annoying and tbh I personally wouldnt be bothered. But all I sell is shards so it wouldnt affect me.

3 I would totally agree on, I would defaintly do quests in specific cities IF THERE WAS A REASON TO in order to get fame up. The reason to do quests is not becase of fame but what fame does for you in that city and that will ultimately be the decision, getting better facilities at a guild is not worth it.

4 Wouldnt do anything, everyone would just be part of Uldah and they'd strive in conquest.

5 This would be best, make each city have its own missions (but seperate to main scenerio). You would also need a system to allow people to switch

I dont get 8, it just makes no sense to me, are you saying get extra SP if you go to another city? That would be forcing the player to go elsewere which is not a good direction to go down and you'd also need to provide leves that give as good SP per kill as the ones in Uldah do.

10 would be good. But im fairly sure this is going to happen, the screenshot of the last dungeon was a dungeon in Limsa (You can tell by the mobs + textures) and there will no doubt be one for Uldah because its the most populated and theres no reason to leave good old Gridania out.