This is just a little pipe dream I think would be neat to have in some way in the game. We already have a housing system wich is really cute - but it could be more involved with finding stuff for it in the wild as drops.
I think having a chance to drop rare trophies you can hang in your house from bossfights would be really cool. You know to hang em up over your fire and flex to your brothers in arms.
I think the life sim part of the game doesnt get talked about enough here. I love all the small things that add immersion to this game