I’ve noticed that HDR Efex Pro 2 has a nice feature. When you save to exit the tool, it creates a new file and appends “_HDR” to the end of the filename. It would be great to have all the Nik tools do something similar, especially since some don’t have a “save as…” option…
In my normal workflow, I often have several versions of the same file in the folder, all of which have the base name with varying numbers of “_nik” appended to the name. Having each tool put its unique identifier would help me more quickly find the one I’m working on when returning to PhotoLab.