Urn,
We've talked about this a lot and are in complete agreement. W/T could defnitely carry a show on their own.
The first ep I ever saw was "Hush". I was pulled in by how clever it was. I had no idea where things were heading with the two of them, and as I found out what happened, I was a little tenetive. But, VERY shortly I found that i was watching just for the W/T interraction because they are so cute.
I agree that the show would require a decent ensemble that revolves around the two characters. No show is easily carried by 2 characters alone.
I like the idea of the family unit of Dawn, Willow, and Tara. And have thought on several occasions that things would have been better for everyone if Buffy hadn't been resurrected.
Obviously there would be a need for male characters as well. Xander could be worth keeping around if he can stop his pathetic crap and be a man. No angst intended there. It's just the yellow crayon things seriously got on my nerves.
I think really the ideal situation when SMG leaves would be to bring Tara back, make Dawn a young slayer, and have the existing Scoobs look after her and train her.
W/T would be the emotional support at home that she would need (the parental figures that she should have had anyway).
The show could continue quite nicely with that scenario and the fact that Willow would have "controlled" powers, while Tara could use all of her power when they were in a jam.
LostSoul
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She practically had genuine molded plastic stamped on her ass.