I finally changed from Acrobat Pro XI, which served all my needs, to Acrobat DC, for security reasons, since only DC is supported. I'm glad to see that DC has all the previous capabilities and more. But I'm dismayed that it visually feels like we're put into a toddler's playroom with gauche oversized multicolored icons on three sides that distract from what's really important for a scholar like me: focusing on the pdf text. Yes, I can put it into full screen mode, but I then lose access to the few tools I constantly need to mark up the text. So I have no choice but to live with this awful design. Obviously your designers have no idea of how scholars use pdf texts -- and we now depend on pdf's for most of our research. We need more flexibility to organize the screen so that the text is maximized and we have constant access to whichever tools we constantly need, without ugly, oversized icons. And it would be great to be able to place the tools we need wherever we want, without having four lines above the text in addition to the margins being used up with immovable icons.