FTW?
Perhaps it's time to have another look at GIMP, it didn't used to do 16-bit (that was a while ago...) and I ended up writing scripts using dcraw and ImageMagick to do most of what I need.
Not sure I have a use for Scribus, although I'd love to have something that could be scripted to take data (in whatever format, say XML) and generated formatted output.
Thanks
