Architecture tools missing

Blender is fantastic but for architecture modeling,it lacks some features like precision modeling, push pull with measurement, importing 2d drawings for precise modeling (scale problem always), shape tools with measurement, a proper unit system,easy to paint or add material (that's actually not a big issue). What I'm trying to say is architect's and designers need precise workflow. Consider SketchUp features and it will be life saver for freelance architect's and designers like us who can't afford softwares like SketchUp, revit, 3ds max ,v-ray etc. Blender really has the potential, so please look into this. Maybe add a new TAB for architect's and designers. That's all blender is missing when it comes to more real architecture users.