Yes I agree, ArchiCAD needs to improve Point cloud performance and management plus Point Cloud editing would be great.I use ArchiCAD for Design and a Faro S70 for 3D Scanning and I must say I"ve had to use Autodesk ReCap a few times (which works well...

I would also like to do as per the question above, I'm interested to hear from anyone who has a method for making a hole in a column