Plugin utilization breakdown:

Foundation Plugin: Not parametric, slab on grade foundation, less than a minute
Wall Plugin: Fully parametric, exterior walls only with some doors and windows, about a minute
Truss Plugin: Rafter roof not parametric and required manual editing to complete this roof framing, approximately 30-45 minutes of trimming members with the trim tool (Truss Plugin).
Based on this test the area I am falling down in most is the roof. I need to be able to automatically create complex roofs and also have them fully parametric, this has always been the holy grail of the Truss Plugin and I have not yet achieved it.
In my mind the Wall Plugin has already surpassed the Truss Plugin in ability and functionality.