Train decor mode
Now i know this sounds like some sort of custom train maker but please read the suggestion before voting, thank you

I suggest that after getting 2 wins, a new mode unlocks that is a spot with spawners for all props and weapons (including ammo) in the game with your train nearby and a list that allows you to pick a train from the ones you bought, now this mode is purely for fun as it allows you to decorate your train and either build a fortress out of your simple starter train or be as goofy as possible with friends

Pros:
_adds a new fun mode to kill time while waiting for friends for example
_gives a reason to buy multiple trains instead of just one so you can experiment with what you can do
_gives even more cool images in #showcase on the discord server
_can sometimes become a gamenight or discord event idea for who can build the coolest train out of ingame props or who can make the dumbest looking train possible

Cons:
_no cons whatsoever, well maybe we'll have like 2 or 3 crybabies but still, no cons