Penny is a serious relationship type of girl. Leah is extremely loyal but she loves to push the boundaries of sexual kinks. She'll be interested in expanding their relationship to include more experiences, including bringing in other women into their bedroom.
Cassian is certainly someone with a lot of potential. I'd love to work with him for years to come. But I always consider my audience when I make decisions like that. Currently, Penny's game hasn't been as popular as I anticipated. I'm going to put out several chapters of Penny for Your Thoughts but if it never quite catches on, I'll probably move on to another story.
There's a lot to be revealed about Penny and Cassian. When some of the curtain is pulled back, you'll see just how important Cassian and Penny are.