I have design drawings with plan views with "symbol" member or single line member representation. I'm not much concerned with the behavior of the grid lines in the model but on the 2d drawings I would like to be able to break the grid line in the center so it doesn't pass over the top of a member line, making the drawing confusing to read. Revit grids are nice for that. A.S. grids should be the same. Also, it would be nice to have a grid at the bottom of my model and have it show up on all plan views with the ability to turn it on or off and not have to copy a new grid up to each level.