What if we had gilding items which wouldn't boost stats/attributes directly but would give utility bonuses instead.
Introducing:
Pockets - pants, shirts and cloaks gilded with pockets would increase inventory space.
Gilding items with pockets would work just like regular gilding with the rate of success depending on various stats etc.
2 variants mainly, one adding horizontal lines of inventory and the second adding vertical lines of inventory. The quality of a pocket could impact the amount of inventory space added.

TL;DR Imagine a world with bigger pockets and fewer merch robes.