it would be nice if it could just export a grid of ortho images, and that way keep each one below the 40k limit.
but it should still be possible doing it with lots of regions. (ie split your current one into 3x3,5x5,7x7 etc…)
it will be possible to automate it with somes scripts and cli version.
but still should be possible to do it manually with steam or promo versions.
but either way it will take longer than just being able to save out to a grid of images on export.