"I would love to see drum track kit pieces recorded on separate tracks in future, this would give us full control of what is included in the drum track, with the ability to mix pieces from different kits and also be able to mute/solo the separate tracks."

Yes, that was requested back in 1854, well seems like it.
You could have multichannel compressed and uncompressed drum files.
Having a Multichannel Mixer in a Tab and the master volume in the Mixer Tab.

You can have "Multi-Drums" on the Drum track realtrack/drums/loops/usertracks but it will pre-mix-render to stereo track then play.

Until then something like EZDrummer 2 is a good option.

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