Yup, there are lots of little things that were left off. A big reason for this is that we didn't want to make it that huge of an initial jump, and wanted to at least have an easy to achieve base. For instance today you can be 501st acceptable with an unmodified FX kit, meaning plastic belt, black ab plate buttons, but with an ANH helmet and wearing a holster on either side. Or having an ESB helmet on an otherwise ANH suit. Just getting folks to have a costume that is movie-consistent would be a big step in quality.
As the Legion on the whole moves towards these details we can revisit these standards again. Just like MEPD upped their standards last year once the majority of standtroopers had achieved the original set.
That out of the way - we're always open to ideas on what to incorporate in - so feel free to suggest away! Some we might adopt sooner, others may be deferred, but it's still good to have a list.