With any redesign of a widely used page there are going to be people who dislike the change, just like there was for the redesign of the LiveJournal profile page. Many people do not want change. If you are one of those people, like I am sometimes, it is best to try something out for a little while before sharing your displeasure. In other words, give it a chance. There is a flickr group discussion with people sharing their gut reaction.
One of the significant improvements to the new photo page is larger images. The photos will display 140 pixels larger in size, a 28% increase. I had a hand in supporting this new size, especially for photos uploaded before April 1st 2010, and am excited to see this go live.