I have been annoyed by one aspect of this really great app since I first started using it years ago. That is, if you choose an Effect or Adjustment that previews its change on the currently visible image, the default for the sub-window (dialog) is to pop up smack in the middle of the image you are changing, blocking half of the image (and the most important - i.e. middle - half, at that!). Thus I always have to move the sub-window aside in order to see the effect on the image.
So the feature I am requesting is:
1. Allow an option to specify where sub-windows will pop up, and/or
2. At least have sub-windows pop up to where you last moved them (thus you only have to place it the first time)
BTW, I love how I am able to dock the tools. I keep the main window sized about 2/3 of the full screen, and dock the four tool sub-windows at the four corners outside the main window, so as not to obscure the image I am working on.