Probably drawing a lot from the Alan Moore run. How far exactly we get is another thing. I’d imagine setting up enough of the Apocalypse thing that happens around vol. 4 or so for Season 2. So that means setting up guests like the Phantom Stranger, Deadman (yay!), Zatanna and Zatara, The Spectre, and of course John Constantine. Cain and Abel with the House of Secrets is also fair game, and would be a nice little nod to the first appearance.
On the other hand, I could see it sticking to a lower powered Swamp Thing in the Bayou for the first season. Focusing more on Abby makes her uncle Anton a perfect baddie for the first season. Probably see Woodrue turn into the Floronic Man, and a conspiracy with the Sunderland Corporation behind the bio-restorative formula, or whatever they tweak the chemical that makes him Swamp Thing to be.
Hopefully see Jason Blood/Etrigan at some point. I believe the Parliament of Trees and the true elemental force aspect will take greater precedence in later seasons, however.
Excited for the series nevertheless. Alan Moore’s run is my favorite comic; Bernie Wrightson is one of my favorite artists. I’m on board here. It’s the primary reason why I subscribed in the first place.