We need more inventory space

[Sapphires]

This sounds very promising. Now just make ores, logs, etc. stackable and you may never hear another inventory complaint again.

There is still plenty of items like Elemental Obis / Elemental Gorgets+Sachets and other things that could use a quest to combine them to a single inventory item with broader use.
Just because they give us more inventory slots doesn't mean we couldn't benefit from some new items or quests to consolidate items like they did with the Chatoyant staff.