3rd Retainer by Default, please?

[Noxifer]

-long, informative text-

I wish we could click the Like button more than once D: I'd Like this ten times if I could.

I have one retainer filled to the brim with level 50 gear only, and that's with just one page worth of weapons (shared between all jobs).
I have one that's almost filled with materia/demimateria only. (Three pages with some random culinarian mats, high-star crafting mats and glamour prisms from when I couldn't make them myself.)
One with pre-50 gear and two pages of crafting mats. Both for glamour and good pink gear for the classes I'm still levelling. Have had to throw some things away already >.< (Read: throw at my GC) And I've sold off a lot of my crafting mats, too, once the gear part of her inventory grew beyond the three pages I'd initially allotted to it.
The fourth retainer holds furniture, fireworks, dyes and unique items like phantasia potions, behemoth horns and atmas. [Edit: Plus some i90 accessories waiting for my desynth skill to get that high...]

And my personal inventory hovers between 80/100 and 98/100, and my armoury is rarely below 22/25 on each type (weapons and rings are always at 25/25, with spare zeniths and each job using two rings; left-side equipment's not far behind).

It's interesting that some people seem to excuse the lack of mule-enabling with the "you're meant to do everything with one character" reasoning, while at the same time seemingly not considering that if you're meant to do all classes with one character, you should have more storage space to help you with that compared to a character in a game where you're locked into one class and can at most do two or three crafting classes (which often don't require separate gear). Not less (per class).