Theoretically (Not that there's a snowball's chance in hell of either of these happening) - both could happen. But let's choose 1.
One one hand you have Frontierland with the land adjacent to BTMRR. With maybe a Geyser Mountain and/or Western River Expedition. A Signature, some shops, the mandated gift shop or four.
On the other Liberty Square. Utilizing Tom Sawyer Island (either by bridge or filling in some of Rivers of America). Possibly a HM Restaurant, a trackless Jack Skellington E-Ticket, A Villain dark ride - and maybe depending on the success of the SWHotel, an immersive HM boutique hotel you could get to via Floridian Way - and incorporating all of these elements.
One one hand you have Frontierland with the land adjacent to BTMRR. With maybe a Geyser Mountain and/or Western River Expedition. A Signature, some shops, the mandated gift shop or four.
On the other Liberty Square. Utilizing Tom Sawyer Island (either by bridge or filling in some of Rivers of America). Possibly a HM Restaurant, a trackless Jack Skellington E-Ticket, A Villain dark ride - and maybe depending on the success of the SWHotel, an immersive HM boutique hotel you could get to via Floridian Way - and incorporating all of these elements.