Okay, assuming it doesn’t get picked up by some other network, this is the final season of Angel. The articles I read mentioned that the WB wanted to give the show enough time to slap together a series finale. So what should occur?
I’d say that one absolutely necessary plot development would be for Angel & the Fang Gang to have a face-to-face encounter with the “Gods”-honest, actual Senior Partners of W&H. Not some little girl or black panther in that white room. And wouldn’t it be just the most ironic twist if one of the Senior Partners turned out to be Angelus? I’m not sure how they could justify that plotwise, but it would serve as a nice little bit of metaphor - Angel has been fighting against his dark side for the course of the series.
I would guess that it came down to a moment with Angel & Spike fighting side by side against the Senior Partners in the head office. Wes of course is conducting some sort of spell to keep a gateway open to the Senior Partners’ home office, but that portal is rapidly shrinking. There is only time for one of the vamps to get out alive. Angel tosses Spike through the portal, and continues fighting the Angelus & the SP’s until the bitter end.
Spike, as a reward for helping utterly defeat the Senior Partners, becomes the subject of the Shansu prophecy - he is reverted back to human form. Buffy shows up for a surprise cameo appearance…only to reject Spike; in the past year she’s fallen in love (& married) Xander! “Oh bollocks!” Spike cries. Thus, he lets Harmony to RE-vamp him. Harm & “Blondie Bear” take off to kill Vampire Slayers, and cause general mayhem.
Meanwhile, as his reward for killing the Senior Partners, is reunited in the afterlife with Cordelia. “You’re dead” she reminds him, “You killed your evil self,” and so are no longer subject to any gypsy curse. Thus, Cordelia shows him a moment of true happiness…the first of many.