This right here:

Please note that the company would purchase these Starter packs from the DAO (with the company receiving a 50% revenue share) each time a Spellbook is purchased using proceeds from the Spellbook sale.

Great idea! Spellbook is expensive for new users considering it doesn't give them anything, so great job to use some of the net proceeds to make the journey easier for the new batch of players to own some cards. Stickiness is important, because we don't get value from the spellbook - we get value from players sticking around and building a collection!

Maybe that would also be a good time to remove starter cards from modern too - players can use the cards from their free pack, and they don't need to worry about "starter card penalties"