Suggestions and ideas for my mission

Hello! So, I am currently starting a mission, and what I need right now is not scripting help, but actually ideas.

So, my current idea is a survival-ish game, but not like DayZ or anything like that. More RPG-Esque; with skills that increase and let you improve in certain areas. I'm also making my own building system. But, what I need help with, is:

-A map to use (good for roaming, not small)

-How much survival elements come into play

-An actual name for said mission

-Anything you can think of that would be fun or could work, open to anything!

Thanks guys, looking forward to hearing your suggestions! :)