me again... ;-)

Is it only me or is the fader (the equivalent of a "T-Bar") really short for precision work?
I would suggest to at least double its size and to put it under the two main windows.
Another wish: that the exact position when the "swap" between the preview and the output screens happens would be clearly indicated with a marker of some kind...
Here's the main reason why: I was experimenting a "crop" of one input (a camera for a speaker) and I was putting it at one side only of the output screen, so that the other half of the screen was devoted to another camera, in this case another speaker facing the first one. This way, I was able to achieve a very interesting "split screen" effect, not unlike a PiP but without resize of any input.
But I had to be very, very careful not to go past the "swap" point of the fader !!!