1, full Cave should Give protection from sandstorm, it swap betwen sheltered or not inside, just add around Cave nondesert zone
2 , same thing with water, i was surprised when sandstorm killed me underwater
I dont get to snowy area yet so if blizards work same as sandstorm can u change them as well
Maybe few more places where u can survive sandstorm, half caves, Under cliff etc.
Its mostly cus low leveled players for Who are sandstorms big issue, to help them with natural safehouse, also this places can be nice to build small/secret bases