I understand showing snow will cost more. I'll believe that the walkers hibernate in winter. People, however, don't.
But there is not even a mention of winter happening. "You know, when such-and-such got sick last year? Yeah the cold finally killed him/her last winter."
I doubt the Saviors hibernate. Negan would probably be like: "They are cold, hungry, weak, sick. GO GET THEM!"
Yes, the non-mention of winter is glaringly inexcusable. I could maybe--MAYBE--give the show a pass if the location they were supposed to be living in now was still Georgia somewhere since it's not uncommon for that area to have very mild winters compared to the north...
But since they're now in Virginia, not too far from DC, they have to have dealt with harsh conditions, and I would think considering the scarcity of resources a snowy or bitter cold winter would be as much of a threat to their survival as would zombies and human foes at other times.
I imagine the cold would negate some of Negan's walker defense system, and in general put walkers in a place of third importance. Would be better to have Spring, when the walkers are thawing out.
I guess we were not the only ones wonder if winter was coming...