I think a really cool feature to have in the game would be scent marking so creatures can more efficiently separate into clans or tribes and make claims on territories.
This could happen by a certain button on the keyboard (maybe P, would make sense but don't know if that already does something) that allows the creature to leave it's scent on the tile it's standing on. this 'scent' could then be seen in scent mode, maybe as the color of the gem the creature had who made it since different creatures would have different scents.
I just thought of this right now so there's probably a lot of flaws in my idea, if anyone likes the idea of this or has some recommendations of how it could be fixed up to make more sense please let me know in the comments because I think this could be a cool addition to the game, especially for players with really large packs. Thanks for reading