Don't be afraid of the Ghost....it's cool!
It is getting close to not need rendering at all in 3ds max... damn... max was fun.
Point clouds scare me, talk about filling up your model with data. But it comes with the territory if you need to do it. Changing the point cloud within Revit is pretty easy, scale and placement is just by property and placement.
Once you have the cloud in place you can actually reference the inherent planes made by the mass of points to place work such as walls. That is pretty damn cool.