Eager for the Horde.

This game is what a zombie survival gameshould be. Any thoughts on what will the devs surprise us in the future?

For me I'm leaning on to these few things:
•Betrayal amongst survivors (its a bit of a stretch since itll be a bit of a turn off to others but I'm curious if they'll go for it or not)
•Trading resources with friends ( a possible thing for those who have trouble surviving)
•Aiding friends and random strangers (for rewards, its up to the devs if itll have consequences)
•Easter eggs (a dev could be a survivor... or a zombie, itd be a nice one to find, or guns from an existing movie or game)
•Former survivor zombies (a bit of stretch as the game itself already has an amazing variety of zombies)
•Exiled survivors return (Maybe they can take revenge on you?)

Raids or Pvps would be a turn off for me as I feel as the game doesn't need to have those to make it more interesting.

Happy shooting friends!

Thanks for the suggestions.