Well, in the preview comic, it established that the immortal Steward was the guy who gave Hammurabi the idea to write down a code of laws. So I imagine it would be along those lines -- events that we know, but with Steward turning out to be the guy who set them into motion.
Hmm, that might run into a Who Cares problem, but anyway, odds are this will never become a series so it's way too early to start fretting.
And I really can't think of a Syfy show that fits your description, other than Haven, perhaps, which I don't watch. Warehouse 13 is the one show that revolves primarily around a core male-female duo, and their relationship is emphatically a brother-sister type of bond, with the whole idea of anything sexual between them being completely and profoundly off the table. Eureka had plenty of UST between its male and female leads for a time, but it's always been an ensemble show.
You just named the three SyFy scripted dramas I was thinking of.
It's not like they have dozens. And when I was watching Warehouse 13
, I could tell very well why they chose to have a male and female lead rather than two characters of the same gender (not that that stops the shippers).
I haven't been watching lately so just for giggles, I googled "warehouse 13 shippers," and lo and behold, there are a whole lot of people seeing stuff you aren't...
Fuck Yeah Myka & Pete
But it looks like that floozie HG Wells is making the moves on....Myka!