In my opinion, the Yukon is one of the best maps in the game, but I believe that a lot could be changed to improve it.
First of all, I wish there was a possibility to melt snow to produce water using a fire and a pot (I never had contact with snow in real life, but I feel this is possible to do, so if not, you can disregard it ).
The reason for this is to make getting water easy, so that you don’t have to worry about it so much, thus putting real emphasis on the real problem of this map: Starvation.
Just like in real life, being in extreme cold will make your body burn more calories to keep warm, so I think that should be the main focus of this map, to keep fed and not starve.
So, for this to fit well in the game, I believe there should be very few food spawns in the city (after all, this is a zombie apocalypse and we can pretend that almost all the cities food has already been collected). Soon the player would be forced to look for an alternative method to obtain food, this method would mainly be hunting.
So I believe that a remake of Yukon should have many animal spawns, so that the player would be led into this hunter lifestyle.
Lastly, I would like to see more makeshift weapons and more encouragement to create them, rather than the player jumping into the first hut they see and finding a hawkhound, so I think there should be less of them.
In summary: I would like a greater ease in obtaining water (through melting snow), a great difficulty in obtaining food (especially in the cities, thus stimulating hunting) and manufactured weapons, and a greater amount of improvised weapons (which could be added through an auxiliary mod).
There are dozens of other things that are tied to the game itself (like fires needing logs to stay lit) that would undoubtedly improve the player experience, but can only be added by the game developer.