Preferred unbuilt battleships and battlecruisers

Which planned but unbuilt battleship or battlecruiser would each panellist choose to see completed?

The choices include G3, K2, F3, N3, and Montana, with different preferences for fast battlecruisers and heavily protected battleships.

G3 and K2 are among the first choices, followed by F3 as a post-World War I successor to HMS Tiger. Even one F3 alongside Nelson and Rodney could change Britain's supply of fast capital ships, particularly when older battlecruisers needed maintenance. N3 appeals because its protection was intended to resist 18-inch guns while its own heavy battery threatened an opponent. Another panellist later chooses Montana. These are personal preferences for unbuilt designs, with operational availability and protection explaining some of their appeal.