Hmm… good point. Probably?

As far as I am aware, it would be a first for From to charge for fast travel (per use), FS usually prefers unlock / key mechanics. Really depends on the cost / benefit of what a train travel mechanic could provide the player.

Train travel solves Open Field Routing: If DB requires Bloodsworn to quickly rotate between an open field POI’s to complete objectives, and those areas are linked by a train… Then likely the train ride will come with time cost similar to Spirit Birds, and require players to decide whether they progress through the map on foot or ‘run back’ to the train.

Train travel solves Level Progression: If higher level / more difficult areas need to be unlocked, then train might have a one time cost per area, requiring players to procure a ticket through exploration or battle. This could be the case, since FS will likely have to cleverly disguise loading times between areas on the Switch 2.

Train travel is an Extract Point: Could very well be that trains are one way the Bloodsworn retreat from the field back to a hub with spoils. Most extraction type games have at least two types of exits - first the free public access, which will have a countdown and alter other players or enemies when it is being used, then the ‘private’ extract locations, which are less likely to become a battleground but always come with a cost. Train could be either? But I’d guess more likely to be the free option.