I'm so glad you're writing this story. The plot synopsis you gave of it sounded so very intriguing and the pay off is fabulous.

The parade of people coming to visit him was tantalizing. I was certain who a few of them were (Faith and Kennedy were obvious) but the others were less certain. I missed the Xander voice. Then you brought it back as a voice in his head by the end of the chapter. I'm afraid I'm looking at Alex with the same sadness as the others.

Your Spike voice is pretty good, although he's a little low on snark. I'd count on Spike to treat Xander like he was still vastly annoying even when he's in this state. Berate him for letting Willow change him so much if nothing else. Insult his diminished intelligence. The voice in Alex's head might even appreciate it and start yelling out comebacks.

I can't wait for the mystery to unravel.