I just read the Mousedroid Q&A, and basically they said exactly what I was trying to convey...
Clone Wars = line for the kids predominantly, with very little collector interest. And Legacy = line for both, and many more collector-targeted figures. Hasbro's doing what they're doing because they don't feel the collector-base is there in Clone Wars to support "obscurity", and in general I think they're right on the adult-market not being there to support things getting too obscure in that line.
I think Satine hits the relatively obscure issue, plus a female character... Ahsoka's a main character on the show, with whole episodes revolving around her, so I'm not surprised she's selling. I think Hasbro might be a little shocked at how well since she's not one anyone sees often. Would Satine come close though? I see Padmes a bit, and she's more important than Satine as a character in the series (far more appearances and not likely to be done showing up anytime soon), so how would Satine fair then by comparison? That's assuming Satine's not going to be a regular on the show.
Clone Wars is a weird one... It's like "Collection 1" from the old days is its own separate line now, while Collection 2 is broken amongst 2 audiences.
I'm just speculating... There's a lot of stuff to be revealed yet, so who knows. Maybe Satine or something is a surprise up their sleeves?
As far as comparing the Twilight and Plo Koon's fighter... That's apples and oranges. Different sizes/price points, and not to mention the tooling exists for Plo's fighter in the $25 assortment while a new Twilight would be pretty expensive to tool up in the first place (not that it's a bad idea for a vehicle, it just can't be compared realistically to Plo's fighter)... repaints are just a fact of life in the hobby, as they fund other things (new things) getting made. I actually really like Plo's fighter deco, but I won't buy because I can't keep loading Jedi Fighters up around here. Some kid will probably dig it though, as will some adults, and maybe someday it'll help fund the Twilight.