Our office does mainly renovation so we use renovation filters extensively. While they are very useful the workflow associated with it is suboptimal to say the least, mainly for two reasons.
1. For a project which requires replacement of the existing insulation we have to first create the wall, then duplicate it to create the existing insulation and yet another one for the new insulation. This could be avoided completely if we could manage those layers directly with a composite wall where we could assign renovation status to the layers.
2. Another inherited problem from this workflow especially when dealing with large residential buildings is that when we duplicate the wall to create the insulation layer we have to transform the windows into openings.
In previous Archicad versions when you selected different sized windows and transformed them into openings, the created openings would keep their initial size. For some reason since a few Archicad versions this is no longer the case. All created openings will take the size of the last selected window.