Screaming? NO. Thank heaven for gags. I have very sensitive hearing which somehow even applies to reading

Non-consensual YES of course
Underage, NO
Bondage YES (at least as important as sex!)
The developing relationship between assailant and victim, how they connect ,what the think of each other. I like characters to be sentient human beings, whether they are dumb or evil SOB's.

Something different and unusual in a story can be very stimulating, far better that the same old things recycled.

Have you thought of contact authors directly through the site? The vast majority are flattered to get feedback and are interested in getting further ideas.

M