The way inventory is handled in this game is quite frankly, atrocious. There is so much crap in this game from fish, tackles and lures, materia 1-8, furniture, armor, weapons, quest items such as memories, mats dear god the mats, you get the idea. What makes this even worse is that just about all of these items have a HQ version that takes up yet another spot.
And it feels like everything SE is doing is just a bandaid. 400 slots in the armoire is a drop in the bucket, hell one dungeon alone has something like 70+ items you can glamour, this isn't including belts for obvious reasons. Chocbo saddle bags can literally be filled up to the max with lures, tackle and fishing bait.
And I get it SE, I really do. It incentivizes those extra retainers on the mogstation, but something has to be done because the further we go in expansions, the more of a problem this will become.
Btw my own suggestion would be something like make HQ items as toggle, have them stack with our NQ items but if I press w/e button like alt, it shows me how many HQ of those items I have. That would clear up almost half of my inventory. Ideally we could just have WoW's catalogue for weapons and armor (and if they're generous mats) but I know they've stated it would be extremely difficult...