Missions

I know I'm going to get spammed and called a newb. But I want to know. over time or after doing something, does the loot every come back to the missions? Or is it like good for you, you got all the loot and its never coming back. And also does anybody know if they have plans for adding more missions.

It's fine, the forum is here specifically to ask questions and more. Anyways, as far as I know, they don't come back.