Q4. Revisiting Terrain & Points of Interest
I've been thinking on this myself. My original idea was that once a location was surveyed you simply move on, and retreading old steps has a lower encounter chance and you do not activate Points of Interest again. I may revise this. Thank you for bringing it to my attention.
Q5. Resting
Yes, it should read "restore 2 Luck."
Q6. The Winnebago
Initially this was meant to allow travel to an adjacent space with a low encounter chance, but in my own playthroughs I honestly never go back to the home location, so I may change this to simply a "start" location that gives some initial one time bonus.
That you so much for your questions, I like rethinking and relooking at it. I really dig FPS and I think it has room to grow and change. I'll be working on additional settings soon (also one page) and possibly a play sheet, and maybe even down the road settings composed entirely of a card deck. If you have any other thoughts please let me know.