Would it be smart to make a decal mod or something in later versions of Blockland that allow you to apply decals to bricks and interiors? I think this would replace print bricks sorta. There would be a max decals setting or something that allows yo to limit how many decals are visible. If it ever goes over the limit, it deletes the oldest decals. There would also be a print gun where you select the decal and it stays there with out being deleted. And with the new print gun comes with a max decals per player setting for the server. Bullets would apply the decals that are deleted when it goes over the limit. When all the bricks are deleted that a decal is on it deletes the decal.
The print gun would work like the normal one today, except where you shot it, it would apply the decal there.
