Looks like Discogs is broken in this script. Just returning a list of the artists with no albums. Also curious if an option could be added to select whether the report is seeded by the Artist field of Album Artist field.
Something a little more advanced, and probably a headache and potential for a really bloated file... have you considered any kind of "Black list" or sorts for this script? Say I run a report for an artist and go over what is listed and there's some Singles listed or something that I don't need/want. I then run it a year later, I'm going to be presented with these again. However, if there was a way of "ignoring" 'albums', then when I run it a year later, only those albums which have been added since would appear for me. You know? Though I guess this wouldn't have a large affect on usability. If you run it often, then there's unlikely to be many new items added and if you run it a year later, seems like a waste of time and space to save that "Black list" for that length of time. Eh...
Awaiting for 10160
to be fixed/implemented before thinking of moving to MMW4.1 + MMA.