As far as the Queen's stiletto heels, i like it because it goes for the same sexuality theme, and the inner arms i just like in both t rex and the Queen, it breaks the human form too. I think the Queen's feet (which were carbon copy of the original Alien;s feet, plus the feel) are great and much better than AVP's dino feet
As for the Queen not being like Giger's design, he had nothing but a praise for it and actually said he wouldve design it in similar way
"It's all beautifully done, everything, the designs and the way they're executed. The Alien Queen is also nice. She's a bit smaller in the face than my alien but my basic design was very well studied. She was frighteningly well animated. - H.R. Giger, Cinemafantastique Magazine May 1988
The Alien Queen is very complicated, like the way I would have done. I like how she moves - H.R. Giger, Sci-Fi Invasion! 1998
When I heard James Cameron himself designed the Alien Queen I was even more impressed by the talents of this versatile director - H.R Giger, Cinefantastique 1992
Anyway, as I said, as far as the original alien/Aliens aliens I have nothing substantial I wouldnt like about the design (I only didnt care much for the hands of the original and feet of the warrior), but as far as those redesigned Pumpkinhead aliens of the Resurection and AVP movies, what I hated the most about them, aside from making them fleshy monsters and throwing out all the biomechanicality, is the headshape