Based on the initial release of the tile, it was pointed out that they didn't match the other circular objects (pentagrams, bloody pentagrams and abbatoirs to note) that have long existed within the world. There's a side by side comparison floating around someone put together that shows the difference. We took to matching the original art, since that's the most common idea of what perspective should be despite those circular tiles not aligning with the perspective of the squares underneath. Here's a nifty comparison,
