I'm hoping we get this added as well still! It would be nice to have a way of eventually collecting all armors/helmets for Rook and both Veilguard Hero armors for companions across multiple playthroughs. I was able to accomplish this with mods, but it would be nice to attain this without modding. Interestingly, the count for mage weapons (both mageknife and staff) is 1 more than I was actually able to obtain (39/40 mageknives, despite no blank spots remaining). I wonder if there's one still being counted that was removed from the game? I know if you mod in all weapons for Rook you get a unique ice arcane orb that appears to be otherwise unobtainable.
Would also love if the golden nug allowed us to carry over decor for the Lighthouse (I've never been able to get even half the available decor in a single playthrough, according to the counts in the game) as well as the rarity tier for all equipment (since some are locked to act 3 only, which can't be kept).