The hope being that the majority of peoples requirements will be met by what has been produced
And so they will, I am sure. Until you decide on the tagline. Then we'll be back here arguing.
Maybe I'm missing something here, but I was under the impression that the whole purpose of the Joomla! logo (and the Community's part in choosing it) was "brand identification"? I.E. for the CMS, not
for our own sites. That seems to be the entire drift of the Brand Guide, after all (EXCELLENT work, btw!). I don't, in that case, see the point of all of this nit-picking. Surely, if you build your own (or a client's) site, you will have your own design/logo/colour theme for that purpose? What, then, is the point of plastering stock Joomla! logos all over it? Unless its some kind or narcissistic exercise?
I have no problem with adding (where appropriate) a discreet "Powered by..." badge, as a token of respect to the work done by many people in creating Joomla! for me to utilise as an end-user. But I would not even consider giving the Joomla! logo dominant positioning in a client's site. Nor (as has been pointed out), am I required to.
Of course, a large number of Joomla!/Mambo sites exisit purely for the purpose of disseminating mods/components/templates for the respective CMS's. They may feel it necessary to make heavier use of the branding imagery in their sites, if only to make it visually clear that they make their living pandering to the requirements of an Open Source Community. Personally, I go for content over graphical appearance every time! And I'm damn sure that these sites form a very small proportion of the total using this CMS out there! Most of whom probably don't mention Joomla!/Mambo except in the footer or code.
My 2c's worth, anyway.