I know about the problem with geometric lines. True I don't have many but I do have some. Look at this example: http://www.renderosity.com/mod/gallery/index.php?image_id=1829203

There's several geometric lines, and other very fine and precise ones in the characters and stand. This was rendered in GR. There's a bit of aliasing here and there but not much (and I even sharpened the image a bit in PS, which strengthens some of the alias even further). AA settings are Crisp/10/24/100%.