Yeah, those seem like the main 2 options, but I disagree on the first one being more likely. There's a lot of problems with it. For one, too much mystery has been set up around Stussy to be explained in a CP0 cover story. For two, Lucci and Kaku betraying the WG is still a very big if, and for three, there would be no point in making her a double agent just to have her rejoin the same group. If they're betraying the WG, they could have just all done it together. It's not like Stussy has done anything as an ally yet. I would rate it as a 50/50 split at best, though I still think there's a small chance of her joining the revos if a big group of the egghead cast goes with them soon.