Well, -I- think this story is fantastic right the way it is, and people who like other stuff can go read other stuff :P
my favorite parts were:
- the realistic inevitability of death: anatomic accuracy just gives the story that little additional oomph;
- the fact that everyone involved was aware of this: sane and consensual, people! ...ditching the 'safe' part...
- the fact that nobody made a big deal out of it and was even specifically aroused by the fact it was an irreversible decision;
- as well as by the pain in the process;
just, damn. Consensual casual guro done RIGHT.
(If there's one thing I question, it's the increasing ridiculous sizes of dicks. Then again, I'm not into futa, maybe that's the norm. Either way I was fully ready to read about, like, another dozen girls taking their turns with the thing...)