First let me say BP is the only site I'll ever subscribe to because your material is consistently my favorite. That said, here is a list of stuff I particularly enjoy, would like to see more of, and an idea or two.
 

• Using legs/thighs and feet to do more teasing of betas in chastity. The clips Lola does like this ("Facesitting Chastity Tease") are incredible stuff. Plus her demenor and teasing talk is great. I'd love to see a clip where she, like, "teaches" this to a newer girl. Speaking of teaching,
• Another "Mom teaches daughter how to ...." series would be awesome. The mom/daughter stuff with Brianna, Kata, Lola, Dani, etc. are great. Would love to see more of these with different models.
• More hardcore breathplay where the beta is actually struggling. Focus on facesitting but maybe add some hand-over-mouth stuff. Some other facesitting ideas: have the girls stuff socks/panties in the beta's mouth and tape it up then have them facesit and/or pinch his nose. Add in some verbal teasing and you've got a hit.
• One of my all-time favorite BP inventions was the milking machine because it was innovate and fun and really hot. I'd love to see a new "thing" the girls could play with. Something like the garrote chaire from The World is Not Enough https://www.youtube.com/watch?v=3opX0w7T_qo. Maybe turning the wheel makes it harder to breath or crushes his balls or something.
• More humiliation stuff like Blueball Party video, writing on slaves, filming and taking selfies with slaves - I can't get enough of that stuff either.
• In videos with 2+ Princesses, if the beta is laying down (being facesat or foot worshiping or whatever) have the other Princess sit on/tease his chastity more often.

Thanks for reading. PS- All the Princesses are outstanding but Princess Kat, you and your giggle are my favorite