When I read a good story I would like to learn more about the character's background / squeal too.
If a character gets castrated, I would like to read about if they come out living prouder or be destroyed by it.
Although I am not a big fan of series, like Paolo said at#3, JUST GET STRAIGHT TO THE POINT ALREADY, DANG IT! It's no fun to drag out the story while missing the actions. If I were to write a series, penis and balls would come off more often than deaths in Game of Throne, haha!
Personally, I get the most thrill out of descriptions of the sex, castration, humiliation, what's going on in the character's mind, reading about them struggling with the pride of being a man and finally submit, etc. The physiological aspects are what get me hooked.
These type of story would most likely fall in the #1 category where the deed is done, so does the story. I wouldn't call it boring as long as the story touches up on everything I mentioned^ (Very rarely for that to happen though!)
But then again I believe 99% of the stories on here are just "fan fiction", each person has their own vision and fantasy, if the author thinks it's good enough to share with the world, then it should be cherished!
What we can do is to keep submitting feedback so everyone can benefit and improve in the future!