Damn, so tempting. I'm guessing you would have a flood of male applicant and female too.
Love the fact that you just threw the idea and wants people to collaborate and make something out of it. I often like to do it in such a way or least start with few wide possibilities. Its generally its a little tough to get interest that way though. People seem to like well defined request thread it seems.
I like the prospect of jealousy, the passion of 3 people combined, the taboo. The possibility of dominance play. While I'm not really into the traditional play, one person specially in the bed taking charge, switching of who is the more controlling female at any point of time, that kind of possibility sounds exciting. I think it would be as much fun to see the interaction and sex between the women as much as it is with the man.
Just some completely wild and semi random possibility to gauge what might interest you. Some might be overly cliche but still fun to discuss. Seems I'm ending up with too much incest plots.
An interesting point is whether any/all of the characters looking for a polyamorous relationship or it just kind of happens.
The new handsome neighbor attracts not just the daughter but also the mother. The man is unable to choose between this. How to make a realistic start for the relationship I'm not so sure about.
I had this idea for a pair of twins, both highly successful professional in two different fields and one man who wants them. This one though the man comes in touch with both of them independently but decides that he wants both and not just one. Love the idea that both women are confident, strong and never would dream of sharing her man and most likely very competitive of each other despite loving each other very much.
Now werewolf's mate sounds dangerous. I bet a werewolf's mate would rather jealous specially if you add some kind of bond thing. Sisters, best friends, strangers.
Two college girl, rival often comes to like the same new transfer student and start making a mess of each others lives for him until he gets them together for a meeting (they think a meeting alone) only to find they could either play together or not at all. Ohh how mad the ladies would get I wonder.
When a passionate couple with a bisexual female partner goes for a sexy photoshoot, one of them notices how attracted the female photographer was of them. I imagine it would the photographers first lesbian and first threesome encounter and the beginning of something wonderful.
The sci-fi idea borrowed from older plot seeds might not fit for a long term one. A female heavy ship crew, the captain and XO are highly successful and gorgeous ladies. An alien passenger (maybe diplomat in a military courier) who goes in heat for not just one of them but the two. Fraternization between the crew, with an alien, breaking so many boundaries yet unable to resist.
Well seems I'm a little dried up but there should be a lot of story/plot possibilities here. Hopefully some of these would inspire other better ideas. Looking forward to reading many more :)
Aha jen nice to see you too.