Though I have only just go the game, my friend and I came up with some ideas which may be popular amongst other players. Some of these may already be in the game and I have missed them, so if they are I am sorry for stating them.
IDEAS:
1. Markers on maps
2. Fists as weapons
3. Cannibalism
4. Clan System {
Ranks, Insignia, etc}
5. More Animals
6. NPCs of some sort.
7. Most hides in Game make armour (probably alread there, but simply: Wolf pelt - Wolf skin cloak, bear fur - cloak, hoodie)
8. Sea Life
9.More Races
10. Larger worlds
11. Trading system
12. Random map generation
13. Random animal spawns
I know these may be difficult or may infact already be in production, but I believe that these may have quiet the positive affect on the game.
BUGS:
1.When swimming arms appear hollow
2. Some buttons haven't been working
3. Texture of sub-water is light when head is above water. (Hard to explain)
But apart from that, everything else seemed great, if I see any more bugs or ahve any more ideas. Will be sure to update this.
Thanks for the great game.
DEAD KARL