By any measure, Mavericks is a lame name. In fact, the best other recent example of a great brand coming up with ridiculous name was Ferrari calling its latest supercar the LaFerrari. Ferrari or Apple, both products will sell well regardless of name. The real point is that it doesn't matter. What WWDC 2013 tells me is that iOS and OSX are on a course for total convergence. It's what they call the combined operating system that matters.
What's wrong with naming successive OS versions after US States, or US presidents, or after great innovators who changed the world through their ideas? Or after leading world cities? If it has to be animals, then why not birds of prey or just birds?
I like the new look and feel and am sure that it will become even better as Jony Ive settles into this new role. The interface already looks so much more mature, cleaner and user friendly than before. I am so glad that Joshua Topolosky at the Verge dissed it; if he'd liked it, then Apple would have been doing something wrong (Shock of the new, dude! Get over it!)