Obviously, we are going to want adventures for TA and VH.
The question is, what will the procedures be for publishing such adventures? Will there be a second license/approval process? Or will there be a free usage license ala Labyrinth Lord (for example) that requires Goodman Games approval?
Enquiring minds want to know.
For TATG, you'd need a license from Goodman Games. As far as my end of it, all I ask is that I get a chance to review the adventure before publication. If it's going to say "Transylvanian Adventures" on it, I'd like for it to be true to the spirit of the book.
The Rule Enhancements and Firearms Rules (and Tables) are OGL. So people can riff off of what TATG has started. The character classes, factions, plots, and Adversaries that don't already fall under public domain aren't, however. But people can make new character classes for TATG or alternate class abilities for existing classes.
I'd like a look though and wouldn't want anything in the TATG sub-line that wasn't committed to Gothic "Adventure" Horror. I think all that's laid out fairly well in the book. Limit the pathos. Sanity is for NPCs. Yadda yadda.
There's going to be some pretty wild rules hacks, a full-on setting, and a unique-ish take on monsters in the second book. Anybody producing anything too ambitious prior to the second book runs the risk of obsolescence. The third book is going to have the Theorist, spellcasting, and major settings hacks. Some people might be interested in writing adventures for the settings hacks. And, again, writing up rituals and spells for TATG before the third book runs a risk as well.
That's another good reason to have me check stuff out.