There's a lot of things they could do to ease the burden of storage, such as:

- Let the glamour dresser become a glamour log so that every time you get an item, the appearance is saved forever so that you don't need to keep the item around

- Create separate inventories for dyes and fish bait

- Make some currencies part of the UI instead of an item in your inventory. For instance, potsherds from Deep Dungeons could fit here

- A separate storage for finished relics

If at least one of these was implemented (especially the first one), inventory management would be greatly improved