Finding the right sidelength so that the six angles match up perfectly at the vertex was quite a math mess. It doesn't seem to work for all confugurations yet, but still, yay! ^^
oh btw since i figured system compatibility should be cross-compatibility when possible, I made a mounting plate to let people use my VPSS accessories with honeycomb walls. It's an alpha and going to be kind of a paint to print for reasons, but it should work: