Feature Request - Allow customization of Perspective Grid increments

For the Perspective Grid, it would be exceptionally helpful to be able to visualize specific sized objects over a coordinated Grid system on the UI floor. For instance, if I were to use 3D Stager to design the foundation for a series of five (5) 16 foot by 24 foot building structures (log cabins?) - with all 5 separated by 8 feet , it would be amazingly helpful to be able to set the Perspective Grid to display a primary grid line at every 8 feet, and then to display a secondary grid line at every 4 foot interval. Again, this would make visualizing multiple, similar objects on the Perspective Grid MUCH easier to process.