They can’t really move the train station. What they could do is utilize the existing queue, gift shop, restrooms and the small play area under the train tracks and outdoor meet and greet area back on the other side of the tracks. Plenty of room to do something and the transition under the tracks would be pretty good, not intrusive to Frontierland. If they follow a similar pattern to FLE they might build a permanent meet and greet area for a few of the characters. Woody has his own land and restaurant now at DHS so the place is vacant anywayMost likely. Still holding out hope for PatF/New Orleans Square and a Critter Country land at the MK.
(Moving the train station would create enough space)