MIDI recording is not for all instruments. EVI and EWI would work as themselves, but not playable on a GM instrument. I used to record a VL70m with Yamaha breath controller and midi keyboard, but I don't have the breath anymore. And those are stll not BiaB instruments...
Piano, guitar, bass and drums, maybe a Zeta violin pretty much are all I would trust but that's the point. Use the tech where it works, do something else where it doesn't...
P.S. Just realized

I'm looking for the RealTracks to MIDI SuperTracks converter...