> My use case is I have 2 applications that I want to drag something between, and the windows overlap
This should work for most use cases. If you can see the window for the target app even if you can’t see the drop destination, holding on that window briefly while dragging should raise it to the front (my testing says about 2 seconds). Alternatively (or if you can’t see the target window), the various expose gestures and buttons work during a drag operation. For example on a MacBook you can start dragging from one window, swipe up with your other fingers to reveal all applications or swipe down to reveal just the windows from the current app, and you can drag to the window for your target. From there you can hover on the target and expose will switch to the chosen window after a moment, or you can perform the opposite swipe action while hovering over your target window to raise it to the front.
As for the new document thing if you mean to save a document for the first time by dragging it to a finder window, as far as I can tell you can’t do that. You can drag the finder window to the save dialog but not the other way around.
This should work for most use cases. If you can see the window for the target app even if you can’t see the drop destination, holding on that window briefly while dragging should raise it to the front (my testing says about 2 seconds). Alternatively (or if you can’t see the target window), the various expose gestures and buttons work during a drag operation. For example on a MacBook you can start dragging from one window, swipe up with your other fingers to reveal all applications or swipe down to reveal just the windows from the current app, and you can drag to the window for your target. From there you can hover on the target and expose will switch to the chosen window after a moment, or you can perform the opposite swipe action while hovering over your target window to raise it to the front.
As for the new document thing if you mean to save a document for the first time by dragging it to a finder window, as far as I can tell you can’t do that. You can drag the finder window to the save dialog but not the other way around.