16×16 Maps for Map Art and LED Mechanics

I’d like maps to be divisible by half. We already have a way to upgrade maps from 128×128 blocks up to 2048×2048 blocks, so my idea is to use shears to cut that size in half, similar to the upgrade mechanic but in the opposite direction. This could be done either in a Crafting Table or in a Cartography Table. That way, we could reduce 128×128 maps to 64×64, then to 32×32, 16×16, and even 8×8 maps. I think this would make it easier to work with the map LED mechanics that were recently discovered, or to create art using the Minecraft map item. It would be an easy way to do this in both Creative and Survival modes.