Is there any way to reduce the spaces between UV islands without scaling the actual islands? I know about Ctrl+P, I know about Individual Origins scaling, that is not what I am looking for, I am looking for the scale tool that reduces empty space between a selection of scatered, non-uniform UV islands without actually scaling said islands. Any suggestions?
When you press Ctrl+P move your cursor or let your cursor be in 3D window and press F6. A popup will appear - play with the settings there to adjust how much spacing you need.