i voted info on the Shanshu and the aftermath of NFA.
the Angel/Buffy/Spike thing has been done to death by us fans...the last thing i want is for Joss and co to start debating it again, especially concidering neither Spike nor Angel will be in the comics very much, so i don't see the point...maybe a passing mention by Buffy that she really, truely did love Spike, and then move on.
the Shanshu thing was never covered. 'The vampire with a soul, once he has fulfilled his destiny, will become human.' after all those battles he has to face, and everything else. i'm not convinced that Angel really signed it away, but i'm not convinced he's the one who deserves it either. maybe i'm biased, Spike being my fave character and all, but i believe that Spike is the better vampire. Angel was cursed with his soul for killing the gypsy girl, so the only other options for him was to live in a sewer and eat rats, or start helping humanity against evil. Spike choose to have his soul returned, to be a better man. he choose to help fight evil before he got his soul back. yes, the chip sorta pushed him in that direction, but, like Angel, he could have said no and continued living his life the way he was pre Restless...trying his best to get everyone else to kill the gang, while he stood back and gloated.