Good job team, this is sorely needed. Sadly first implementation isn't fantastic (as expected of a v1 :)). Main thing desperately needed is a image loading speed ranking index, like e-h has. I've experienced a number of very slow page loads since this has gone live, and most have come from...
@bracket, @Lolicore: The reader developer mentioned upthread that specific-size resizing has been implemented and will appear whenever mangadex beta pulls in the update.