I really like the idea of a Rival Clan/Tribe.
I think that this idea is possible yet would/could take longer to include.
Idea
When moving to a new island, your tribe/clan scent a very intense smell of creatures similar to them.
The larger island seems to be cleared in some areas.
The rival clan/tribe will not react to your nichelings until they scent their tracks or come across one of them.
They could possibly decide not to be hostile unless attacked or instantly go for your tribe/clan.
I'm not sure if this is too or less descriptive of what's required but I seriously think this idea would be kinda cool.
As I've read, multiplayer may take too long to add but if this wasn't the case I'd enjoy it if someone else could control the other clan/tribe!
