I'm not the best artist, but I'm sure all of you guys are! A winter based area would be cool, some frozen armor effects and shorter sight range would change the effect of the battle in a major way. If anyone has some cool ideas or like some artwork I would love to see it
SM and CSM risking falling through frozen lakes, reduced number of span points for Orks as it its harder for their spores to spread and reduced Eldar spawn as snow settles on Webway gates giving their position away. I've no idea how lore compatible any of this - except for power-armour clad bulky humans falling through brittle ice
Like a rock! They sink to the bottom of the river/lake/sea bed and walk along it - providing they have their helmet on and seals intact, otherwise... blub, blub blub
I think it would be interesting to see if they replicate the weather conditions of the Battle of Skalathrax. Where it is SO cold that you would have to move from bunker to bunker, building to building, cover to cover. Otherwise your character would freeze to death. Perhaps without a roaming Kharn flaming everyone. ; ]