The new interface is nice, but I really use the drag and drop a lot as I do Graphic Design and Design production where I have multiple projects in different folders and drives. I send out approval PDFs and it saves time and hassle to drop what I see in Acrobat into my eMail and Slack chats (and sometimes copy to another folder). I hope you can put that back in some way with the new interface. Luckily tech support showed me how to revert to the old interface. :)