*Spoilers for Harbinger within*
It is my opinion that neither the adulterous act nor the "homosexual" one depicted in Harbinger was there to glorify such acts or titilate the reader.
TLS, your own sig file quotes what St. Paul believes God will do to adulterers. I doubt that the Lord Jesus himself could have spun a more agonizing parable for the hell that adulterers will live in than Mr. Mack has spun for Pennington.
As for the homosexual relationship, we've been down the road of "does the Bible apply to non-humans?" but it's still a valid question. Also, having only read Harbinger, are we certain that it's T'Prynn that's having the relationship and not the katra within her?
I'm sorry, TLS and anyone else who was offended by the book, but I don't see what the problem is. Nowhere are the acts that ya'll consider "immoral" glorified. Harbinger was just a good TOS-era book with some major conflict thrown in.
I'm looking forward to the next books.
Oh, and Mr. Mack, not to open old wounds or anything, but I think you achieved what the folks behind Titan where trying to achieve with the big cast of characters and the alienness of the universe, but without any of the concerns I had with the Titan books. For my tastes, you got it right.