I dunno. There's a really good argument for saving full penetration for the final update here in this very thread. A lot of players of DMD are only here for that event at this point. Once it happens many will probably drop support for this project. Mr. Dots would be a fool not to see that coming.
Yeah, but the romance implications to PinV as a symbolic peak - and how that will push their incestual existence into most aspects of their daily plans because they'll likely become inseparable as the romantic bond solidifies - could add a layer of complications (both short and long term) to EVERYTHING.
All the while, Rachel will be manipulating her husband, D, Frank + his father and MC, at the very least. Plus, MC is only now trying to figure out if he can somehow stay longer to work on their uncertain future and what kind of plan(s) they might develop (with likely a lot of luck) to claw D away from Rachel's selfish aims, despite law and circumstance being against them. We don't have any idea how Vicky's participation will stir this mix yet, either.
D and MC becoming bonded at the hip only amps up the difficulties for this couple in the near term, I feel. There's definitely more interesting story to go and . . . that's even before the Elena factor is considered, with it obvious that she will continue to be a significant element of both support and (likely unintended) problems for the main couple. Even that photo she took seems to be only the start of potential dilemmas she's going to generate before any of them are ready.