Hi Rob,
Thanks for your comments. I'm a part time developer of Gramps, and ran into quite a heated discussion about the possible implementation of evidence style citations in that. Reason for me to oppose was that the choice of templates that we would have to implement is way too large for the intended audience, I think, and that applies to WikiTree too.
I have a registered copy of RootsMagic here, and the amount of EE based templates in that is so large that I see no point in using them. It's like Tamura Jones once said, you need a wizard to choose the template used in their citation wizard. Moreover, when RM generated GEDCOM's are uploaded here, they create an awful mess in the biographies, because of all the _TMPLT stuff in there.
I know the value of citations in science, but as an engineer I try to stay on the practical side of this, which means that citing is something that must be so simple that I can remember it. EE and the formatting rules that you refer to go way beyond what I can do from the top of my head, and as far as I can see WikiTree is mainly a consumer oriented site. You need to learn a little wiki language for the biographies, but that's about it, and that's how it should be, I think.
Working from the top of head means that I can memorize a handful of template parameters like author, title, date, url, but having to choose a specific template before I cite anything goes way beyond my time and capabilities.
IMO, our citation rules must be so simple that they can shown in the edit screen that we have now, i.e. right to the biography edit box. Anything beyond that will most probably not be used by the vast majority of WikiTree members.
regards,
Enno