Henadic Theologian
Legend
Why do you think that there will be a ton of "DLCs"?
I think that if they announce 3, then you can expect 3.
I also think that there being DLCs is just someone's idea of how to monetize material that was developed for the books, but didn't fit.
Apparently, it's common that they develop a ton of material for each book, but have to make a lot of cuts when they get down to final page counts. All it would take, IMO, is for some exec to wonder about the wasted development expense, and they get to polish the cut content for DLCs (as Digital content isn't beholden to page counts in quite the same way).
While it would have taken extra development to make the cut content "ready for prime time", it would take much much more effort to make even more "DLCs".
I mean, if it's a success, we will probably see this again for future products, but I doubt we will see more related to these products. (Unless, of course, a future product is itself related to these books).
Except this isn't overflow material at all. They made it clear that that material too niche to ever be considered the two books. There was never any way Astarion's Book of Hunger was ever considered for those books, I mean it has what 18 vampire themed feats, way too focused on a niche subject. And Netheril is way in the past when these books are hyper focused on the present. If these DLCs are profitable they will do more of them.