The roleplay storylines (mummy, angel, alien etc) are a nice change up and cover a hugely popular kink, it's a nice add by Zorlun.
However, I do partially wish there were more to them. We know she joined a club with that short-bearded guy, it would be pretty cool to find out that they're stories he is telling to other guys and Myriam. To Myriam, they're dreams but to the guys in the club, they're reality.
The smaller alien is the short-bearded guy and the other aliens are other club members, including the trapped human. The mummy, demons and Angel is the short-bearded guy. So Myriam thinks she is dreaming but she actually having sex with other club members.
Unlikely of course, as mummy happened at the museum date with Guy, so be totally random club event to happen then. Wouldn't make sense for game over and Myriam's deaths as well, but it would tie it all together.
For all we know, maybe eventually it will be all tied together, Zorlun got this novel well thought out.