Create a way to manage folders.
When I am on a feed, and I want to remove it from a folder, there isn't a way to do this. Or, if I want to create 5 new folders, there isn't a way to just create them. The dragging and dropping method isn't working for me, the way the how to says it should. Have a manage folders page, where we can manage all the items and folders, like the favorites page of our browsers.
the drag-and-drop is useless when you have set the "Show only those folders/feeds that have unread items" which I think is a must with hundreds of feed.
Chris Swenson commented
I agree the drag-and-drop isn't very clean, but it does work. I've noticed sometimes that the interface ignores where within a particular folder you drop an item, but usually moving an item from folder to folder is fine, except when the folder you want to target is at the bottom. I found that opening the last folder and dragging your subscription within it (among the other items) will definitely get it into the folder. If you want to remove an item from a folder, move it back up to "subscriptions", which is the generic area for any subscription.