If it isn't about Angel then Ats was a waste of time, if not a farce. I don't necessarily believe we will see him get Shanshu but I would like to still regard the 5 seasons as having their integrity intact.
I fail to see the logic in this. ATS was the story of the evolution of a man from what could be defined as more or less Lois Lane to Buffy's Clark Kent (lousy analogy, but I think that you get the point) from sidekick to defender of the weak, to hero, to champion. Whether or not he ever gets awarded the Shanshu really has nothing to do with that. In fact, if Angel did all that he did with his ultimate reasoning and final goal being made human again, regardless of why he wanted that humanity, it would actually cheapen what he ultimately managed to accomplish. ATS is Angel's story, pure and simple. No ulterior motives, private goals, or hidden agendas.But, really, if W&H and the Senior Partners were truthful about Angel actually being the recipient, and that the reward was FROM THEM for services rendered in the final, accept no substitutes, one and only, REAL apocalypse, that pretty well means that, come that time, he and Buffy will be fighting on opposite sides again.
As for W&H spending so much money setting Angel up to be their ensouled vampire fall guy, that wasn't, or at least almost certainly didn't appear to be, any great gamble at the time. Vampires with souls, except for him, were totally nonexistent. They were betting on the only horse in a one horse race. No chance whatsoever that he wasn't going to cross the finish line first. Then Spike did the unthinkable, and suddenly it's a two horse race for the first time.
For the record, I think that Angel is almost certainly the vampire who will ultimately receive the Shanshu, though I'm not certain whether he's receiving it as an award, or if he's just exchanging one curse (his soul) for another (the loss of his powers when Buffy might need him the most).
Ultimately, I guess only time will tell. Cause Joss sure isn't being very free with the details.