Yeah, I was a bit confused by the scenarios... I thought I'd try my hand at modding and see if I could add passive espionage to the system (but that's a subject for another thread) and I found the scenario screen instead, but couldn't see how to unlock them. Still, they look very cool and just make me salivate about "Ice" even more....
As for suggestions, maybe the FfH team could look into putting an astrology screen (i.e. what constellations are currently affecting play) in place of the Espionage screen and move the scenarios to link off of some kind of "Coming Soon..." link in the Civilopedia.
Anyway, hats off to you, FfH is an excellent mod!