I could have accepted the thunder thighs/hips thing if the joint had at least worked correctly, but it's so low that it looks wrong in any use, and the behind is so big too because her legs have to be far apart (another thing I don't like that much about that design). Her hip tassels don't impress me, they're pretty thick compared to the design, they're not more special than Boba's wookiee braids - not terrible, but not super amazing to me either.
On the hip issue, again, I'm willing to let accuracy slide from time to time if it means it benefits the figure overall. The 2005 Aayla actually has skinny thighs similar to VOTC Han, which is a solution that I dislike. The TVC version obscures the hips with the objects hanging from her belt (which are well sculpted and textured, a first for the character and an interesting detail that shows what Hasbro is now capable of), so I really didn't even notice it as an issue before you mentioned it.
But a big part of what I love about the figure is her articulation, and the ball-joint hips allow her to be posed in some really cool ways. She's significantly more expressive than most other figures in the line because of this, and I think giving her slightly wider hips is completely fine for this reason. (She's not as bad as diaper-wearing Bespin Luke, at least.)
If it hadn't gotten such good press from a few folks, I wouldn't have bought her at all. She's not a bad figure by any stretch, but I don't see anything approaching a "figure of the year" entry out of her and I wouldn't have bought her, she didn't seem like a special figure to me in that respect. For sure I wouldn't have gotten her because I had the chance several times prior and passed then.
Would you have been as harsh on this figure if people hadn't rated it so highly? (Conversely, I don't know if I would have rated it so high if I hadn't had such low expectations for it, since I didn't think we needed a new Aayla that badly, so that could be a factor for both of us.)