Hello Jan,
There are usually several reasons for a single screen. But the most important reason is that I only have one monitor. I don't have room for a second monitor. So I needed a single screen design. More is not necessary at first.
If the single screen also looks nice, then everything is fine.
Some sample sets are poorly designed. But manufacturers and fans of manufacturers don't like to hear that.
Therefore I only mention two points of criticism:
- If the stops lettering is very difficult to read, this is very annoying, especially with expensive sample sets. If the original design only offers stops that are difficult to read, then that is "too much original" for me. I don't like playing these sample sets.
- If the stops are distributed over two tabs, then this is a clear no-go for a single-monitor configuration.
With a large number of stops, it is very helpful if the screen design offers good contrast. With a good contrast, you can see where an active stop is in the corner of your eye. You can handle this better during organ playing than with a bad contrast.
With a new sample set it is helpful if the arrangement of the divisions corresponds to the arrangement of the organ console (bottom-up):
Below the pedal, above the first manual, then the second manual, etc.
With my midi panels, I have the advantage that I can name the couplers myself. I can learn to use it more quickly if, for example, a pedal coupler is not called "RP - P", but the stop in the pedal division is simply called "+ I". But that's just a nice little thing for me. The foot pistons on French organs are difficult for me to learn. If you don't play the sample set regularly, I keep thinking about what the pistons mean. At "de Metz" (MDA), I designed the layout so that it is much easier to use and can be learned more quickly (I'm extremely happy with my layout!).
The Haarlem / Bavo was mentioned above. Just for fun, I made a design earlier. My panel background is not nice - this is a working design and has yet to be swapped for a nice wooden panel:
https://www.flickr.com/photos/vpo-organist/50521380936/There is great interest in a usable single-screen design for my hardware configuration.
Sorry for my bad Google translator English
Edit: I wrote "register" (de) and mean "stop" (en)