Here's how I'd list my inventory desires, from top to bottom:

1. More "active" inventory or any way to get more use out of the 80 spaces I can macro from and use items from. This, by far, is more of a concern for me than how I'm going to store stuff. Things are getting tight even for melee jobs as more weapon-skills appear and the need for a -% Damage Taken set becomes stronger. I want this more than I want to see a toilet that uses fire instead of water, and I promise, that's a lot!

2. Any way to get at stored stuff that's currently a bit awkward in a way that's easier or faster. Access to equipment slips from my moghouse, access to storage from any moogle anywhere, etc. Playing a number of jobs isn't just about having space for all their stuff, it's about being able to change equipment out fast enough that people aren't made to wait.

3. Another set of 80 slots that I can't use items or macro from. This would be very helpful, don't get me wrong. I just can't imagine someone desperately needing this unless he or she stores equipment for level caps or does something else more niche than the market for all-vegan bacon-flavored hair gel.