I'd been holding off upgrading SlideShowPro Director until I had enough time to do so properly, but I was itching to try the smart albums included in version 1.3.
Here I've set my new photos section so it's now calculated automatically. I always find that any “latest photos” section soon becomes static, or involves some duplication of effort. So this section now shows photos since a certain date, but excluding those in a couple of albums which are reserved for this blog. As I already use Director's Lightroom export plug-in, which makes adding new pictures a moment's work, and smart albums mean I could update a number of albums in a single export. They're not terribly sophisticated yet, and target far fewer fields than in Lightroom, but are a great start.