Well, I'm not sure this meets all of your criteria (no Angel-killing and no Xander-loves-spuffy in here) but in the beginning of this epic series the Scoobies are very unhappy with Buffy and then when she hooks up with Spike they are very upset and oppose them. Eventually things change. It's a long long series and one I really liked a lot. It's not a fluff-fest by any means but it's not grim either. It just seems like life, good and bad.
The Baby Series by Mrs Muirhttp://dark-solace.org/elysian/series.php?seriesid=28Summary: Series of four epic fics covering the Babyverse. Spike is called away by Drusilla before he can meet Buffy at the Bronze in Tabula Rasa. He doesn't return to Sunnydale until after the fiasco of Xander and Anya's wedding. Things aren't the same as when he left town...especially Buffy. Post-Series, Season 6, Season 7