PROPOSAL: Create a Very Large board category for games that cannot fit inside of a 15x15 rectangle. David Short's Double Chess is one such game, played on a 16x8 board. Byzantine Chess is an unusual case, which can be regarded as a 4x16 board with two edges glued together. Not entirely sure about hexagonal and 3D games, but I would include any chess variant with more than 225 cells.
Dai Shogi (15x15 board) will still be in the old Large board category. Even Vyrémorn Chess will fit inside a 13x12 board.
PROPOSAL: Create a Very Large board category for games that cannot fit inside of a 15x15 rectangle. David Short's Double Chess is one such game, played on a 16x8 board. Byzantine Chess is an unusual case, which can be regarded as a 4x16 board with two edges glued together. Not entirely sure about hexagonal and 3D games, but I would include any chess variant with more than 225 cells.
Dai Shogi (15x15 board) will still be in the old Large board category. Even Vyrémorn Chess will fit inside a 13x12 board.