So, I was just looking at Elder Sign, which is the other thing I really enjoy. I do like FFG and their Cthulhu stuff, I have a bit of Arkham Horror, not as much considering all the expansions, and I don't have all the expansions for Mansions of Madness. That said, it took a year and a half for Elder Sign to get its second expansion, I just think that we were a little spoiled since we got two-ish expansions within six months of the game's release. Honestly I will be hopeful and remain optimistic until FFG has obviously abandoned this game and it has been years with no news/tournament kits/expansions. They are pushing their new stuff, SW Armada, 40k conquest, their new RPGs for the end of the world stuff, SW will likely get a lot of hype and sales with Episode 7 coming out next year, so their focus and milking it makes sense.
So I just counsel patience.