Make it so the quality of animals are changing to random locations every few days (maybe a week) rather than having set spawns. It's very lame to find your nodes and then farm them or bot them even for the entirety of the world. Hunting would be a lot more fun if you weren't just hunting the same area and were forced to constantly be exploring new areas to hunt good nodes. Encouraging people to explore more and look for new animal nodes is good for player interaction too. I can't really think of any downside to this other than people who are very set in their ways and like the ease of the current system, it's not very good design IMO though.
It'd also be cool to see way more high quality animals being introduced into the game. This world more than ever bone clay is consistently needed which requires a lot of hunting of course, it's kind of LAME that you have such little options on what is viable to hunt endgame. Bears don't get significantly higher than q300, mammoths don't get significantly higher than q400, then you're just left with whales/trolls and that's basically all you hunt for your top q bones. A wider variety would be very cool! Perhaps it could be cool if the maximum quality of other animals grew later into the world to achieve this instead of adding cool new stuff if that's too much work.