Moscow Watcher
Scooby
According to an interview done by Buffyfest at Comic-con, all the actual dialogue will be written by Joss. Allie seems to have more of a fill in the blanks role in the last arc. I don't think he will be as heavily involved as we initially thought. I'd say the arc is going to be 80-90% Joss, and he likes Spike so I expect Buffy/Spike to be given their fair treatment. In fact Allie said as much months ago.
I hope you are right and I really appreciate that you try to make me, - a "rival" shipper - feel better. 🙂
I remember Scott Allie saying that he thinks that Spike's lines come naturally to him (or something along these lines) - so he writes some dialogue after all.
Hopefully Joss will treat all characters fairly. I don't like what Joss does to Buffy and especially to Angel (but that's another story) and I'm afraid that I won't like what Joss will do to Spike. But if it will be Joss' decision, I'll accept it.