During the final sprint when the mobs spawn endlessly and the train is inbound I feel like it's way too easy to just jump on a horse and beeline to the extraction. I feel as though there should be something making it a fight to the end.
Take DRG for example where getting to the drop pod is a fight for your life as you and your friends retrace your steps back up the caves. Meanwhile FFW we just jump on a horse and move to the point. for the most part everything can be ignored/avoided.
My first thought was adding a new, quick sub objective to do to activate the train. Either that or small objectives that can speed up the train's arrival time and make survival more likely.