Not to be mean, but I think I'd have to agree with the thread title on this...
You began with 80 slots (+10 bazaar slots)
You were given 20 additional slots AND the loot drops from combat no longer include +1s or +2s, meaning that entirety of your space could be used more efficiently.
So now you want something to add MORE space (functionally this is what you are asking for, be it direct inventory slots or a "slots within a slot" system)...
Sounds to me like what you really need is a lesson or two in inventory management, or to learn to take a break from grinding to sell your garbage more often, or group with someone that can repair your weapons so you aren't carrying 3 or 4 copies... or learn to fix them yourself.
Again, not trying to come across as mean, but really, where does it end? If 100 +10 slots isn't enough, why would 120 +10 be enough, or 140 +10 +20, etc.?
At some point you have to accept a limited inventory space, and work within that limitation, or else you actually ARE just being lazy.
In all kindness,
P.S. = In all due respect to those who don't think there is enough room for multiple jobs... I do multiple jobs, actually every job, and my highest ranked job is Botany so I know perfectly well about how much space can be eaten by gathering. However, I manage all the space for my tools, my weapons, my arrows (Archer r26), 4 sets of armor, jewelry, repair mats, and a few other odds-n-ends AND still manage to free up over 20 slots for gathering.
edited for P.S.
Edited, Dec 10th 2010 2:31pm by AilysFoxglove