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.
When you install a game with Game Pass you can tell it what drive to install to. I think by default it might just install to your windows system drive but you can toggle that option in tho settings.
I installed Starfield to my F drive so it’s installed into something like: F:/XboxGames/Starfield. I then installed Vortex. Vortex did not automatically detect it but I just hit the button to manage it manually and directed Vortex to my F:/XboxGames/Starfield/Content directory… then it picked it up and I can install and deploy mods to it just like I can Skyrim or Fallout (which I have through Steam)