I just saw this morning that there is a Weekly Challenge on Elite that starts on Thursday that involves Zombies.
Weekly Challenge - All Game Modes - Total Zombie Kills
2,500 kills - 250 clan xp
5,000 kills - 500 total clan xp
10,000 kills - 1,000 total clan xp
This is the first sign that Elite is actually doing something different. Now if they can just added some rewards to unlock.
Roster 3 has been enlisted for those that are interested.