In response to the OP and others, I wanted to offer a couple of thoughts.

In general, I agree with the root complaints about a lack of inventory space. That said, I strongly disagree with many of the proposed solutions. Simplifying crafting recipes? Eliminating / consolidating items that aren't used much? To this I say, HELL no. A huge layer of depth in any MMO is the large variety of items present within it, from the semi-useless to the absolutely critical. Inventory management concerns shouldn't trump game depth - ever.

As such, the focus should be on systemic changes to make management easier, whilst not sacrificing game depth. Along these lines, a tackle box is better than reducing the variety of Fishing bait. Expansion of the Armoire (it should really be able to hold any item classified as non-tradeable) and a Glamour Log are better ideas than simplifying stats even further to reduce the amount of 'gear bloat'.

I say this because, one of the largest problems FFXIV faces, in my opinion, is an utter lack of depth. There's a lack of depth in terms of gearing, a lack of depth in terms of combat, a lack of depth in terms of the game systems. Much of this was done in the name of accessibility, because people would bitch about things being difficult or tedious. It was hands-down the wrong decision. Truly great MMOs marry deep experiences with intelligent streamlining, so that much is demanded of the player, but many tools are provided to help. That's the way it should be.

Does that mean you'll have to sell some stuff every so often if you're leveling half-a-dozen Crafter jobs at once? Yes. Does that mean you'll have to manage Retainer storage intelligently, rather than just throwing things on whatever one has available space? Yes. It shouldn't be SE's goal to enable packrats. It should be their goal to provide strong tools that help players organize what space they do have. Let's distinguish between the two, rather than demanding X more Armoury spaces, Y more free retainers, or Z fewer items required for crafting recipes.