I've been Apple since 1979 when I started an Apple II lab in the school I taught in; I was there for 36 years. I was either the Tech Team Leader (twice for 15 years total) or just on the Tech Team especially as I was moving to retire in 2009. I'm Apple through and through. I've been an Apple Demo Person and the Mac Resource Person at my local Micro Center. I've been a member of my MUG and UserGroup Alliance officer teams.
Mavericks is almost as bad as 7.5.4 was (it was out for about 3 hours until it was descovered it 'killed' the system files). There are more user controls deleted than in any other OS that I can recall; all, I suspect, in the name of unifying iOS and Mac OS. From the inability to modify the info fields (and delete unwanted downloads) in iBooks to iTunes no longer importing Safri Bookmarks, Contacts, e-mail, etc. unless we use iCloud, this is one big smack in the face. When I asked Apple at the 1-800# why the Bookmarks, Contacts, etc. weren't in iTunes anymore, the person (the 3rd one I was switched to for finally getting an answer which I hope is not an indication of the expertise now available) told me it was because technology was moving forward. No kidding. 😟
The Apple management team; Tim, Phil, Jonny, Eddie & Craig; should take a long, hard look at the issues those of us who have been loyal Apple users through the decades are complaining about and make this software work. Aiming to make iOS and Mac OS one big happy OS? Not at this rate. Software not workable or awkward to use? That's Android and Windows; NOT Apple.
Mavericks? Bret, Bart, Beau and especially Pappy are ashamed.