I would have less storage space if I hoarded lots of multi-job armour sets. The fact that I'm using my JSE, which is often just the upgraded ilvl version of my 2004~2008 artifact armours, means I have the same amount of storage use as I had 13 years ago.
I don't like the multi-class gear, or the built-in obsolescence of the stat-bomb ilvl gear, running-in-a-mouse-wheel system. I find it ugly and offensive.
Despite the ilvl upgrades on my artifact armours, they are still the same base armour sets that I obtained a decade ago. I like this because I have memories of the adventures I had while wearing my original FFXI armours.
If I had storage space problems, I would be happy to pay extra money for the Wardrobes.
If I had millions of dollars, I would just give most of those millions of dollars to SE, as my way of saying thankyou for FFXI. Because FFXI is the greatest computergame in the history of the universe, and I feel honoured to support it.