Thank you, Max, that was a really good post.
I think many of us are completely against the whole idea of being forced to change our shapes to conform to Fashion Designers' definition of 'normal' or 'standard'. I can understand the rationalle and necessity of it as a workaround, but I am still fundamentally opposed to the concept of it.
Second Life is about being who you wish to be and look how you wish to look, and it would be a great shame if the unholy workaround of Standard Sizes were to be anything other than a transient bodge just like Emerald's hacky multi attach points were. This is not something we want to have to endure long term.
I explored this a litte more in a recent blog post I made and why I genuinely believe that the Parametric Deformer is very important and why the idea of Standard Sizing has very negative ramifications, although I'm not sure how much it adds to your excellent post.