Simple as that. They visually overlap into the bricks beside them, and are much thinner than normal bricks. Possibly in sizes of 4x5, 4x4, 4x2, 1x1, 2x2, I dunno. I want 4x4 the most.
They also would not have to be free of other bricks; they would be like water bricks, so they can have bricks inside that make windows look better.
Please comment, address concerns, add ideas, etc.