After playing hundreds of hours of Mudrunner and its spinoffs/DLCs one bad thing I have to say is the dev's apparent inability (maybe even unwillingness) to improve the game or support the game in general. I haven't tried Snow Runner, yet, because I can't find in on Steam so I'm gonna have to go and buy it locally, but from what I've seen so far, I think I can tell most of the problems the MudRunner had (namely physics bugs) and that were never fixed are still present in Snowrunner.
And with that - the expansions and new content will most probably be simply new maps and new vehicles.
Nonetheless, like I said, I've spent hundreds of hours with MudRunner. And I bloody loved every second of it, so even if the SnowRunner is simply a bigger Mudrunner with more cars, I'm gonna be beside myself playing it.
Looks like a good ol' winch is still the most essential tool and the game looks amazing.
Plus if the orginal MudRunner modding community picks up where it left, I am more excited about what THEY are going to come up with, not the devs.