Another easy RFE Add a Make Non-existant Dirs (defaults to off) on any output picture field (ROPs' Output Picture and Scripts fields, Light's Depthmap field etc) that simply does mkdir -p for you.
That way, you can use a few variables, and then create many many ROPs with each image going to a nicely named, logically situated directory.
Already done it via a custom expression, but it would be nice not to have to use a custom expression.
Cheers
Peter B