This is is not exactly a new or ground breaking idea. For years I have battled with not being able to draw very short lines. If Revit can measure an object or line down to the the nearest 256th of an inch why can't we draw lines under 1/32" This may seam ridiculous to some but it does come into play when developing window, curtain wall and storefront details. This also would help when converting CAD Details to Revit families.