RealBand is great but it is very buggy as it is just PowerTracks that uses the Band in a Box application in the background to generate up the tracks in a temp folder that are then loaded into RealBand. This can be done on Mac and Win with a vst version that loads into Pro Tools, Logic or Reaper etc.. and uses the Band-in-a-Box.app in the background to give you all the features in the 64bit DAW of choice. It will be easy compared to creating a new RealBandaid.app and will be more stable.

All the Biab functions will be in the VST GUI.
It could have a selectable linear chord track (Cubase/RapidComposer/EZKeys) or normal chord sheet like Biab or both so the vst can be scaled down to a small size.

It will work similar how the Chord Tool works by sending data to the Band-in-a-Box.app running silently in the back ground.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
BiabVST.png (274.42 KB, 54 downloads)
BiabVST-compact.png (221.02 KB, 53 downloads)
BB-Chord-Picker-beta2.0e-600.png (400.52 KB, 45 downloads)