One scenario I've been thinking of is entitled "Everyone Gets a Battleship" and revolves around the TF 34 battleships at Samar. Halsey takes only Iowa, New Jersey, Biloxi, Vincennes, and Miami with the fast carriers to Cape Engano, where the faster SAG makes contact with Ise and Hyuga. Ching Lee stays behind to cover the San Bernardino Strait with Washington, Massachusetts, South Dakota, Alabama, Wichita, New Orleans, Santa Fe, and Mobile. This would pit four US Treaty battleships against the clearly superior Yamato, the slightly inferior Nagato, and the clearly inferior Kongo and Haruna.
ATL battleships that could go to Samar include a surviving, post-rebuild Hood, an early completion Vangaurd, the Jean Barts and Littorios of course, or maybe a one-off Montana. Since the PT boats and destroyers at Surigao Strait could have handled that situation by themselves, Oldendorf taking the Standards north would have made an interesting fight. The three Japanese dreadnoughts would have been at an individual disadvantage but Yamato was designed to fight outnumbered against Standards.