doors on several trains
my second suggestion here, and it involves some trains on our roster
*Basically, some trains should recieve doors on their carts (not the engine itself, only the cart)
doors can be closed and opened by players and will provide further protection from zombies, outlaws or anything that could invade your train, the doors will have health and it will be destroyed if that health hits 0
they will come in 2 types:
_normal doors: they do the job and tend to have low health but faster closing, but big enemies like werewolves could destroy them pretty quickly, trains to have these doors are (passenger, cattle car , presidential and dracula)
_armored doors: heavy duty, have a lot of health where even werewolves will have quite the challenge to break them, but due to their sheer weight they close and open at a slower rate than normal doors, trains that have this include (armored train and frost train)

*pros :
_keep your friends and loot safe
_can give you a moment to breathe and heal up if needed
*cons:
_due to the roblox engine, having moving doors might cause lag and drop in frame rate

extra note : i have to say it again these doors will only be on the carts , not the driver's spot as to not be unfair
(photos below show passenger locomotive door and the armored door of a polish armored train)