Custom maps can rotate individual gameobjects, and tilemaps may eventually have support for rotating tiles. It may therefore make sense to add support for smaller tilesheets. If one can rotate tiles, there is no need to add symmetric tiles to the tilesheet, which would drastically cut down on the number of images needed, especially for 8-bit tiling.
edit: implementing this may also allow for alternate tile layouts in general
Custom maps can rotate individual gameobjects, and tilemaps may eventually have support for rotating tiles. It may therefore make sense to add support for smaller tilesheets. If one can rotate tiles, there is no need to add symmetric tiles to the tilesheet, which would drastically cut down on the number of images needed, especially for 8-bit tiling.
edit: implementing this may also allow for alternate tile layouts in general