Procedural textures are still not supported, and right now they are not really high on our list. One reason of course is, that it's simple to work around the limitation.
Is the "simple work around" creating a tiled material in Revit and taking a screenshot to use as an image? Because the quality of the image in the revit material window is very poor/blurry and not suitable for a rendering texture. Is there a way to obtain a higher quality image of the tile texture? See attached for original image and Revit material image.