Yeah. And these 'hunting trophies' could be added to their 'trophy case' and by doing this, you could be potentially freeing up and saving inventory slots, if the dev plan to make the inventory limited...
Sounds cool. I like ideas 2,4 and 6. I think to start with we should get the hunting trophies ingame first, then slowly add more and more. There are so many I can think of, but don't have time to post atm.