Quick preview of images and videos (single click to thumbnail)
Also a quick preview of linked images: if you hover a link like this https://i.imgur.com/nlF1Bo0.png it should show off a popup with the image (I know there's an icon you can click and it expands and embed, but I'm a lazy bastard and I think everyone's like me, lol)
Also in the drop down next to the username, besides Subscribed/Moderated/Favorites/All, maybe it'd be useful if it has a list of all the magazines you're subscribed to for easy access? I find myself going through several steps/links if I want to reach the magazine that I want.
Or any other easily accessible place where we can pin particular magazines for easy access.