I'm using ZenPhoto next to WordPress, and it always struck me that some things in ZenPhoto, while being younger software than WP, has some of the most simple and convenient methods in the admin that WP is still missing. Like drag and drop ordering of pages and subpages, and an incredibly simple and easy way to backup the database, and restore to one of the previous backups (via dropdown).
WP has a lot, a lot of possibilities, especially now with 3.0. But I often found that the simple things are somehow forgotten. Most people don't need a lot, a lot of possibilities for their website.
Just my thoughts :)