I let one retainer handle the gear I want to keep, and the other one has crafting and fishing material. I recently got rid of my darklight belts because I had upgrades for them and they are not visible anyway. Same thing with rings and chokers, since a lot of them are replaced and if I want to have that look, I can forge a cheaper knock-off. I also got rid of all this gear I kept on my retainer because they were taking space and I wasn't interested in their looks anymore or I was holding onto them for the few jobs I have left to level, but became space hoggers because I can now craft my own gear whenever I decide to pick up on these jobs. As for the crafting mats, I always make sure to have up to a stack of the most common things I use and the rarest things to find.

Another nice improvement could be like what they had in 1.0 where we could turn clusters into crystals into shards... Or just one of these into the other. Just to make the gathering grind a little less.