With TS it is possible to adjust the field of view via the command line start up. This would be a great feature for TSW too.
When listening to Matt (Dovetail) in one of his videos (twitch), I think they have had already tried changing the FOV in earlier builds, but there is or was something to do with the game engine that made the result unacceptable. Whether that is something they can work around or fix in the future, I don't know