senior editors and baseline quality
A statement that "discussion, cooperation and communication" are key, may sound very fine, but it does not necessarily mean anything, unless there is clarity about the objective and at least some mutual respect. Discussion may lead to many things, not necessarily positive. As to ultimate ways, well, I tend to keep away from religion. I do not see any other way towards improving quality than actually putting in the work.
My experience on the English Wikipedia is that Wikiprojects tend to be clubs of users who among themselves have come to an internal agreement to close themselves (and 'their' part of Wikipedia) off from reality, for example by exempting themselves from NpoV-, NOR- and V-policies.
Obviously, that is not necessarily the case for all Wikiprojects, but it does happen. A mere idea (for a Wikiproject, or for a "senior editor"), by itself, does not have particular value. It is all in how it is implemented and how it helps towards making the overall goal come true. - Brya 06:33, 22 January 2010 (UTC)