Here is the first part of my Thunderspire Labyrinth conversion for D&D Next. It took awhile, but I wanted to wait for the next playtest update, take some time to read through it, and try make sure that things were more accurate, and see what kind of rules and content additions we would get (I am pretty happy with how close my iterations of spiders, lizard, and troglodytes were with the "official" stats).
Unfortunately, the removal of the sorcerer and warlock meant that I stopped working on my demon origin and infernal pact (Baphomet), though the duergar race and racial levels are still in (and I am working on a demon-binder arcane tradition). Victor (aka The Planeswalker) has not finished the final draft of the Seven-Pillared Hall, but most of the locations I mention are in the middle. It is not terribly important, anyway.
Anyway, let me know what you think. I changed a lot of the plot, hopefully for the better. If you notice any mistakes or have any criticisms, feel free to comment on it.