Hi Danny, As Konrad mentioned some examples of what you want to obtain is good practice. However, as I read your post I come to think of the PointAnalysisDisplay nodes in Dynamo. This allows you to produce “Heatmaps” in a Revit view of any data that you can connect to a point in the model. The resulting display of the heatmap can be adjusted in Revit and gets stored in the Revit file. Now the difficult part is to make the checking algorithm that provides you with the data about where MEP can’t make an opening… 
Here is just a quick example with two attractor points on one face:
And result in Revit:
