Allow users to update set releases.
Removing the dependence on development effort to add new card sets would allow the tool to live on if support is dropped. Making the set database a non-binary file accomplish this.
Xavier Trevisani commented
An alternative to this is to provide an in app form to submit corrections additions. this could then give you a big help while keeping total control
currently email and forum methods are less than effective
Gad D Lord commented
There are no current plans for dropping the support of it.
Non-binary versions will not allow you to have really speedy operations and intersections between decks, collections, card pool.
An average user is not really aware of all "matherialization" routines for updating legality for 42 formats, 600 abilities and adding edition details.
Apart from that the card database is the most complete any desktop app has so far (twice richer then Magic Workstation, MTG Online or gatherer.wizards.com). I have invested thousands of hours building it and will not crowd-source it.