Just played through, most of, the available game and I really enjoy it so far. Good characters, hot porn stuff, and just funny moments. I will admit after 3 play throughs I got the cheat Mod that shows you what leads to who since some of it felt a bit unintuitive but that's natural with so many routes.
Will say as of now my favorite characters are Jules, Emma, and Ash, Jules for just being hot, Emma because the intrigue got me early, and Ash just for being weird.
I will say as a suggestion in the "Memory" part of the Main Menu to add bios to the characters, if I want to check up on, for instance, what is Sarah I need to either play through again or find the right save with her done and then go into the character stuff to read her profile, just feels a bit overly complicated.
And as a final note, I don't know how far you'll go into this but the sheer Out Of Context Problems this makes could be hilarious. Like I'm just imagining the Stranger attacking you while you were with Emma, Jules, and Ash and just...Time traveler-vs-Spy-vs-Android-vs-Alien.
I don't think that'd actually be possible, I'm fairly certain Jules and Ash are exclusive but just imgining the android and alien trying to come to terms to each other as the spy watches dumbfounded sounds like hilarity waiting to happen.
Or on a more serious note, Rebecca and Katya, cursed to die young and the demon summoner, could make some heart wrenching stuff.