I'm of two minds of this. On paper, I think it makes sense that the next task would include Sophia taking off her underwear. It would be another incremental step in her corruption. Yes, Sophia has already been exposed in front of the class, but a Basic Instinct exposure would be significant. Showing some cleavage or underwear isn't that big of a deal. I mean, it's inappropriate as a teacher but on its own it isn't awful. But flashing herself without underwear? That's a fireable offense.
On the other hand, as a game, this feels like a minor step considering the length of development. We're all so eager for things of significance to happen that baby steps don't feel like enough. The game is so slow that well laid plans for a slow corruption reinforces our paranoia that nothing is ever going to happen. This goes back to L&P's statement that Aiden's tasks wouldn't get too extreme, it feels pointless to the player if we wait months for baby steps.
But it's worth keeping in mind that progress is not always linear. Task 3 was a big step forward, so maybe a slow down is understandable. In real life that's how it works, but in a game you'd expect to see steady progression.
I don't know. I'm sure the scene is going to be sexy as hell, but damn we're waiting longer and longer for a burn that is slowing down.