It looks neat and charmingly minimalist, but I'm disappointed by the requirement to use drag-and-drop to import stuff, which I literally can't do in my terminal-focused desktop environment that deliberately lacks a graphical file manager. I'd hope I could do the standard thing and pass a file in as a command line argument, but it doesn't work.
I know, I know, I'm a weirdo, but people also sometimes just don't have access to a mouse for whatever reason.
I also wish there was a way to disable the dialog that pops up whenever I start the program asking to add desktop icons and an application menu entry. Those things aren't even relevant to my weirdo desktop environment, so it's doubly obnoxious to have to click "no" every single time.