Many CMS platforms provide the ability to specify a certain logic for URLs. I'm familiar with doing this in drupal, using their pathauto feature. Would this be a useful feature for piwigo?

For example, blog software often has this feature. Say you write a blog post titled "Hello World", and posted it today, 22 September 2012. That might be assigned a URL like

    ...myblog.org/posts/2012/09/hello-world

Normally you define the URL-generation logic via tokens and hard-coded text, so this example's definition might look like

    /posts/[post-year]/[post-month]/[post-title]

I'm imagining that some piwigo users might prefer a different URL schema, for SEO or to be more human-readable. Personally I might prefer picture URLs to be : ...myserver/piwigo/gallery-name/picture-name

I don't know how complicated this would be. Certainly one issue is the need to keep URLs unique, which is presently addressed by embedding unique IDs in the URLs. Implementation-wise, most web app frameworks do this to one degree or another. Rather than creating a system from scratch it might be possible to integrate an existing component, like Symfony's or Alloy's.