Standard features, and nomenclature?

A while back there was a push to update all S2 styles to provide a standardised set of features, and use consistent names (e.g. in the wizards) to refer to them, rather than vary between styles (free text/blurb for example).

Is any listing available of these? I.e. 'Must-have-at-least-*these*-features-for-all-styles' list and 'styleguide - list of terms' list.

So far as I can tell changes were applied to both livejournal and ljcom styles, during that initiative. Is that correct?