As a busy blogger running a high traffic site, I must say I'm horrified by butchered media management feature. It is impossible to keep productivity high when what used to require 3 clicks to get done now requires 15 plus reloading and then reloading and subsequent additional reloading and redoing of the same steps, all the while transparency of what you're doing, what you have done and is not done right is none.
I'm hoping to hear from someone from the development team that media management will be reverted back to what it was. I can't go on with butchered feature. If an intention is to keep the user unfriendly and impossible to use efficiently feature introduced in 3.5, I will have to start looking for an alternative to WP. It's impossible to remain efficient when what used to be simple has become incredibly complicated. This is by far the worst set back in WP’s history.