I agree with most of the suggestions already sent to this topic and would like to add my own wishlist:
Parapet wall integration that wraps around the whole building, tricky if it's a double pitched roof as it will create parapet wall along the ridge
Panel swapping feature for different module dimensions, I don't understand why we don't have this already and why the different panel dimensions is an obstacle to this
The option to manually string the panels, useful for modelling already existing systems or if there were any changes to the stringing post-installation
I echo the need for a bigger design are so we can model bigger projects
PVSol is one of the best solar softwares we currently have but hope this thread can help it become the best solar software to use