I'd really love to read more stories with a positive representation of BDSM. Most stories on that theme either ignore any aspects of a relationship outside sex, or depict very unhealthy relationships (famous example being 50 shades of whatever). It's frustratingly hard to find a story that explores healthy aspects of D/s relationships, such as trust building, aftercare, respect for safe words, et cetera.
It doesn't have to be manga (I love novels and webcomics, as well). If anyone knows of a yuri/gl story like that, I would be very thankful.