I searched through the Forums before posting this, and didn't find anything that pertained to this specifically. I guess this suggestion begins with the question; can you download your purchased works as PDFs or EPUB formats?
I think it would be good and fair for accordance to allow you to download your purchased works in a format that you can retain outside of the program. If you cannot guess, it came to my attention that the possibility of losing everything and all my investment is possible in the event that accordance shuts down. (Bible Works sparked this in my mind). While I hope that accordance never does shut down, I think it would be good and faithful for accordance to allow you to retain what you had invested in. I have had programs shut down out of the blue and I would lose very expensive programs and it is a horrible feeling. While I am investing in the features of accordance, I am also investing in the works that accordance offers, and so it seems reasonable to have this feature available.