Great! You've scared me for a moment, but that's your right to protect this place from trolls :)
And yeah, I'm a newbie - we've been working on other aspects of the campaign, and research on CYO just started. That's how I found you guys, you've got some pretty awesome zombie-themed stories in archives.
Let me just formulate things more specifically so that you don't find it too vague. I understand asking for "any ideas" sounded super lame. For example:
1. We now have 12 characters, how many different endings do you think would be fun for each?
2. Would it be exciting enough to have one successful ending for each character, or a few?
(Shooting with real actors will take time and resources, so we're trying to find some minimum requirements we could start with)