Hello Gary,
thanks for your feedback, it's highly appreciated.
Combining multiple buildings into one mixed use structure is already on our roadmap. But you've just made it higher priority :-)
We are just about to release a new version of Modelur (Pre-beta 4), which will bring something you've probably
not seen before... Additional hint: check the link
[3] at the end of the paper :-)
As for more elaborate reporting, we will be adding Spatial Units so you will be able to get calculations for different parcels. Probably in Pre-beta 5.
Stay tuned!
Best regards,
Jernej