To be frank, all of the shells that spend the majority of their time in Primals/Dungeons etc would be better served to set Gridania as their home base and NOT Uldah.

Primals:
1. You can now set the Gridanian Inn as a Return Point...so beat primal=free return to NPC
2. It takes 15 minutes before you can re-enter a primal from a clear, therefore you return to the Inn, talk to NPC, goof around in town, fix gears etc. wait your 15 IN Gridania, then return to your homepoint which is the crystal closest to the primal.

Dungeons and AFKing look at my sexy gears
1. Other than Cutters, Uldah isn't any closer than Gridania (or LL) to the starting points for dungeons. And even Cutters you can get to quickly with and airship+short chocobo ride if you really wanted to.
2. As Garuda is the 'new sexy beast' to kill, showing off your gears is easier to do in Grid...there are even benches etc. around the Primal NPC solely placed there for the AFK crowd.
3. Hyrstmill is in the shroud...

Markets/Storage:
1. Supposedly, with the joining of the markets, you will no longer need to be in Uldah to directly access the 'best' market. So you can shop from any town.
2. You can get your 'Inn Storage' from any City.

Also, you can now buy/use company seals to get the 'warps' for Gridania...so they 'but it's so spread out' problem isn't even a problem anymore.

The only reason people stay in Uldah is to hear /sh's for parties...we have a Search. We all should use it more. However, that being said, there could be a case made for keeping Uldah as a general exping/spiritbonding/leveling up hangout spot. But for the folks who no longer need 'PUG' groups to get stuff done, Gridania is really where you should hang your hat.