I'll be introducing some new missions which will be a bit heavier on the stealth elements, haha. Right now there is indeed little reason to hide from enemies.
Will we get to see things like Tharsis, or Olympus Mons, Valles Marineris, or other places? Great work!
Possibly. For now the gameplay will be relegated to just Mars, but I could see a few missions or DLC taking place on Europa.