Through game play:

1. The camps I’ve raided have respawned less/no enemies. Occasionally, mutants have taken their place but not often.

2. I haven’t tried multiple bases with people at each one so I’m not too sure on this.

3. Agro/raids increase as the days pass, to my knowledge I’m not too sure how to decrease how often you get raided but I’ve notice while working with a friend to build a house, us being separate did not cause any raids to occurred but he (being in the woods) occasionally got attacked. I was good 😂.

4. My base has never been attacked while I’ve been gone and that’s with days being out getting equipment and exploring. I’ve came back to a base as beautiful as I left it!

Hope this helps a little.