Almost 20 years ago, there was a device from Frontier Design called "Tranzport" - yes with a "z". It was wireless and did exactly what you can do with modern days MIDI controllers. You'll find pictures of it via Google.
The device has disappeared from the market, but BiaB still offers support for it (see Prefs, you might have wondered what the tab "Tranzport" is good for).
Apparently, the basis exists in BiaB to implement a HUI or Mackie protocol which most controllers can emulate.
