The current incarnation of Flickr needs some work. Images are packed to tightly on a page (photostream, group, etc) making it hard to tell where one photo ends and another one starts.
The proposed changes are no better. Information about an image is gone or more difficult to find. The space allotted to enter and view comments as way too small, making it difficult to do either.
If Yahoo can give the flexibility to someone setting up My-Yahoo! as their home page to arrange their home page as they want, then surely the same flexibility should be available to Flickr users, giving us the ability to layout our Flicker pages the way we want.