1. New interesting Biomes (New resources, monsters, puzzles, challenges, items and craftables)
2. Improved World Generation (Fixes and tweaks to existing options (I'm looking at less / more spawning stuff all over the place), as well as more options)
3. Game Difficulty settings (higher difficulty = more hunger, less healing, harder recipes, less resources, slower world regeneration, more chaos)
4. New seasonal bosses (And new items!)
5. A game mode that makes each year more difficult to survive than the previous (No more endless survival. How long can you survive in this mode?)
6. Rework on most of the cave biomes. Poeple go to the caves mostly only for the ruins and for light bulbs. And some bunnies and maybe some bosses as well.
7. Fix to existing exploits.