Hi, I also put elsewhere about compatibility of the Winter option. This produces an icy landscape with static vehicles coated in frost and all NPCs in winter uniforms. Whilst this is a refreshing option, from a modding view, a snow winter option might provide some enjoyable modding: for lakes could be frozen and under them only accessed by explosion or gunshots. Snow invites the frost uniforms: invisible suits, guns etc, should work as at present. Transport-wise snowmobiles would add to fun, both individually and in a sort of charabanc mode. APCs could have tracks as with tanks. The purchase on snow and ice water could be slippy as I once experienced in another game. There would also be the possibility of dog drawn sleighs. As in James Bond 007 films, the attachment of guns to snowmobiles would allow for more FPS. I wonder about skis if possible.
Inside buildings where there are no fires, could have the same chill look.
As for MO suits could need to provide warmth so that not only radiation could be fatal, and perhaps artefacts providing warmth. Of course vodka and food would help this.
I hope these suggestions inspire modders to contact the Team to even show designs to be worked up. Good hunting.
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TrueB
by 
Calendar
Subject: Seasonal options