Even the best looking Linux distro without software is only best looking distro...
As a photographer, I recommend following programs to put them into repository:
Rawtherapee (GTK): http://rawtherapee.com
, source: In fact, the most advanced version is still available from http://code.google.com/p/rawtherapee/source/list
- branch default or 3.0
Rawstudio (GTK): http://rawstudio.org
, version 2.0 on the way, or daily-builds from http://rawstudio.org/download.php
Photivo (QT): http://photivo.org
, to get from http://code.google.com/p/photivo/source/list?r=default
Because of rapid development, the most excited features of these applications are available in daily builds, so it would be nice to create (or maybe it's already here?) 'rolling' repository.