Constrain window to image in tab view, how?

Question

I have photoshop workspace set up with the open documents across the top in tabs. Usually one of those tabs is the "Host" document and the other tabs are "Element" documents.
In the process of creating, Element documents are usually resized to fit into the Host document. I tend to go through and select the element documents one at a time which opens them up over the full screen. i.e. there is gray background around the borders of the image. I then crop to the size that I estimate that I will be using in the Host document. Now I open the Host document which opens full screen with gray background.
Here is my problem. When I drag the "Element" documents down to the Host document, the window is very large with a large amount of gray showing around the element image. So large that it covers the whole Host document.  I have to drag the edge over to shrink the window, allowing me to see the Host document. I would like to find a preference that would force the Elements window to be constrained to the edge of the image rather than showing the large gray border. This would usually create a smaller window i.e. the size of the image in which I can simply drag the elemnent into the Host which would be visible.
If there is no solution for this, could it be transfered to a feature request?
Thank You, John

Answer 1

I think the real point of confusion here is that you feel everyone should just know what you mean when you say "when we drag images from their tabs over a working image".
You're mixing tabbed view and windowed view by doing this. This is supported by the screenshot you posted.
I don't believe most people drag tabbed images around to turn them into windows, so that some of the images are still captive in the Photoshop window in tabbed view while others have been disconnected from the Photoshop window and and are now in their own windows.  I think this is probably why there's some confusion here and no one's jumping in to say "yeah, that bothers me too".
What are you trying to accomplish in all this?  Are you trying to make more than one image visible at the same time so that you can see them all while you're working on them? 
If so, have you considered pressing the Arrange Documents button to have Photoshop tile the open documents in one of the various ways?
-Noel