This argument should end, it doesn't get us anywhere.
How some Otakus are into moe girls, Oda is into stereotypical beautiful girls: long legs, curved hips, big boobs, thin faces. Normally when he makes beautiful girls he put all of those characteristics in them, making them less original, but that isn't really a huge problem, because they are all very distinguishable(at least for the most part).
But notice that he can make them different, even while using those basic parameters, and put certain exquisite details in them:
We have Perona-sama and Sharley(Arlong sister) exquisite eyes, Robing exquisite nose, Shaki exquisite lips and other examples. Given the difference in clothes and hair styles we have a huge group of women that have the same basic characteristics but that are easily distinguishable.
Arguing to much because such little things, seems silly, because we're being too strict, unless you're protesting against Oda tastes and his decision to make beautiful girls all with that stereotype. There are a lot of worse authors, and even the good ones aren't that much, much better than Oda.
Example of bad authors with character designs:
Adachi
Touch
!
Mix
!