For anyone who hasn’t yet checked out the Nexus since the game’s release, an inventory UI replacement mod has already been out for some days. It gives you a way more compact and useful inventory interface with clickable columns that you can sort by, and most importantly the value per mass column. The most important item stat in Bethesda games.
Another thing you can do is add temporary columns of many different stats to compare your items. It also shows that quantity of an item you already have while shoping. And probably other things.
If you only do one mod this is the one, the native inventory screens are fucking atrocious
Being a Microsoft subsidiary they could just have bundled Excel for inventory management and even that would be a better one than what we have.