I would like a feature like this also. Here is how I work. I have one large window open where my original files are ingested, this shows large thumbs in capture time mode. The second window to the side shows a folder where I have saved my edited images ready to send. This shows smaller thumbs and is sorted as filename reverse so that the latest is always at the top. Screen real estate on a laptop is at a premium and I am furstrated that PM as a limit on how small you can re-size the window.
I would like to have just one window open, but have a moveable divinding pane down the middle, similar to what you see in Mail and iPhoto and such like. I can specify which folders appear in which pane, both with their own sorting and thumb size.
I would also like to make the window fill the whole screen and fit the thumbs into it so that I don't have half a thumb showing at the bottom, always a full thumb. Does this make sense to you all? Sorry if I'm not explaining it correctly.
