This was wondrous! I thought the allusions to RP were inventive and amusing!
I would adore reading "Visit To A Weird Dungeon Revisited," in which we get to see Alan and Dan at Hogwarts!
Your characterizations are creative and realistic, the dialogue witty, and the sex scenes erotically charged. I really liked the fact that Severus saw the potential of living out the rest of his life in the new dimension, but would give it no further thought until after he's yet again saved Harry.
I also like a Harry that knows what he wants! He was also very adaptive about the strange dimension, and Severus' reactions were too, too funny!