First of all, I have to say this is an amazing software.
Secondly, have you ever thought of creating a Buddhist Study Library, with the Pali Canon and/or Sanskrit/Chinese/Tibetan Mahayana Sutras/Treatises? Financially, it would be a great success for you for sure, as there is nothing even close to this in the Buddhist Studies area (a rapidly expanding domain). Also, I think it's a very interesting area of comparative study for Christians.
Thank you!