This thing that now Sophia is in "handjob stage" is quite annoying, because we essentially get the same thing over and over and over... with no sense of progression.You need to understand that, in the game, Sophia tries everything with Dylan first and then she moves on to give others the same experience. If she hasn't given Dylan a BJ there is no way she gives a BJ to anyone else. What you said would have been better than what we got but it was improbable. One more scenario could have been this, Sophia jerking off DeShawn while Vicky is waiting for cum on her face, and at the very last moment when DeShawn is about to cum, Vicky directs his cock towards Sophia's face, and later on cleaning it by kissing her.
There are endless possibilities but we get what we get.
It would make sense if she kept getting hornier and with her morals becoming loser with each action... and needing more and more to get her fix... but that is not the best milking tactic, so we get this rinse and repeat.