I think you sorta missed the point of my question then. I don't care that there's femdom in the game, I'm actually rather hoping he continues to add specific kinks such as this to the game. My question is, is skipping Diane going to make the rest of the game unplayable? Like, for example, in order to progress with Sophia or even Debby, you have to continue along Ashley's storyline, or how you have to go through Debbie to unlock Angel. My question is, is Diane going to in similar fashion prevent me from continuing on with Claire or any of the other MCs like Faerin has implemented with the other characters?At the moment Dianes content is completely separate from Claires or any of the others girls storylines if you dont read the last email on the PC from Claire you wouldnt even know she existed. Faerin has tried to include everyones niche in the game except the really extreme ones this is one niche you dont like but others do, but luckily for you and anyone else who isnt into Femdom it can be easily avoided and who knows in typical MCs style he may yet get to turn the tables on her who knows
I'm kinda hoping in future updates he adds in ways to avoid "barriers" such as having to go through Ashley to progress Sophia because part of the fun of the game was the ability to pick and choose which characters you liked and which ones you wanted to skip. Not that I didn't enjoy the content other than Diane's, but as you yourself mentioned, not everyone is into everything and should be able to skip the characters they aren't into.
The TL;dr is speculating on whether Diane is going to be necessary to continue on with the story in the future, as Faerin has made happen in the past couple updates (such as going through Ashley to get to Sophia).