This is probably a stupid question, but have staff ever mentioned whether additional tiers of the Filled Wardrobe achievement will be made? I am just wondering because I'm finally over 14,000 and once I reach the top achievement tier (15,000), I would very much like to clean out my wardrobe. But if it's a possibility that additional tiers will be created, I think I may end up keeping everything just in case.

Pretty sure 15k was the last as Subeta kinda wants to move away from hoarding like achievements.

I might be off though.

about four years ago staff was very adamant to not add any tiers to anything that already had lots of tiers and was especially grind-ey, and specifically said that there would not be any more tiers for Wardrobe and that they would retire the 15K one. That said, there have been several Achievements that have a ton of grinding tiers that have been expanded with even more tiers since then. The 15K one still exists, unretired.

Empty your Wardrobe at your own risk. Me, I will not be doing that until Wardrobe permanently crashes and burns. It will be too much of a pain to add everything back in if needed. If I just wanted to declutter, would put it all in my Vault and save it for later just in case.