I am new here, therefore I apologize if this has already been debated. I think this is a much needed project. I have written an entry on a group-blog advocating 1) some form of quality certification, 2) some form of article authorship attribution. The blog is in italian, therefore it is probably not understandable to most, but I am providing links at the end of the post for reference:
Anyhow, I would like to know if there has been discussion about 2). The point I am trying to make is that a quality encyclopedia not only has to be certified by "experts" but also has to attract the best writers. Different types of academic work is recognized and rewarded, not only original, peer reviewed work. Any work where knowledge is disseminated is valuable to the academic author and to the university or institution that employe him or her. The problem with wikipedia is that it is very hard to recognize who did what in an article. Would it be possible to think of a way to recognize authoship of articles? Clearly an article has dozens of contributors, but there is a difference between those that do typesettings, and others who do the research and writing. One possibility is that the expert "certifier" upon certification, whenever possible also attributes the authorship to those that provided the most important contribution (perhaps in decreasing order of contribution, as some scientific disciplines do). It might also mention the others that heped with minor edits, typesetting, and so on...
The point of all this is to provide incentives for academics and experts to write and improve the quality of the articles. With the current model, academics have no incentives to contribute except goodwill. This is good, but we need to capitalize on the fact that universities and research institutions already pay their researchers to "write" without specifying where they should publish - the beauty of academic freedom. If citizendium acquires reputation and readership, than having co-written "version x" of one of its articles becomes valuable to an author and its institutions if they both get the recognition.
I feel that this would make another essential step towards improving wikipedia's model.
Here are the references I was talking about
http://www.noisefromamerika.org/index.php/articoli/391.
The article has also generated a hot debate on the italian wikipedia:
http://it.wikipedia.org/wiki/Wikipedia:Bar/Discussioni/Il_parere_di_uno_stubber_esperto_accademico