WOO! Now's my chance...
Anyways, I'm going to get to the gameplay rather than the story.
Something that relates to the quest (Staffs from Origins, Plane from Mob of the Dead)
BUILDABLE WWs, EXACTLY LIKE ORIGINS (not EXACTLY like it, something different but buildable)
(Add suggestions here)
Also, I like the idea of killing zombies to fill up something (Dogs from Mob of the Dead, Chests from Origins)
Then, instead of giving Hell's Retreiver or Thunderfists, it gives you like a C4 that one hits a group of 20 zombies until round 19 (Recurring thing: Fists and Retriever lose one hit on round 19.) Of course, you can upgrade this C4 thing too.
From the Mystery Box, I can do with weapons.......so long as we don't have the War Machine.
Galvaknuckles can make a return.
As for Perks....ALL THE PERKS with no limits.
Make some suggestions and feedback.