The way you propose to do this is probably an intermediate quick solution, but not what I have in mind when talking about multiple-windows interface.
Ideally, the multiple windows interface is not hardcoded by the skin but rather each section of the skin can be assigned to whatever window the user want. by section I mean "library", "deck1" to "deck4", "mixer", "effects", "mic/aux" and "sampler".
This way, there is only one skin for mono and multi window and this is suitable to each use-case, the user choose its layout.
The way you propose to do this is probably an intermediate quick solution, but not what I have in mind when talking about multiple-windows interface.
Ideally, the multiple windows interface is not hardcoded by the skin but rather each section of the skin can be assigned to whatever window the user want. by section I mean "library", "deck1" to "deck4", "mixer", "effects", "mic/aux" and "sampler".
This way, there is only one skin for mono and multi window and this is suitable to each use-case, the user choose its layout.