Beside Instrument Tracks, also Audio and Bus Tracks should have a indepentend pitch parameter (like their volume parameter, with +24/-24 halftones and different algorithms for percussion and tonal)
Why is this so important? because a good DAW provides the full control over audio material and instruments to: make.sound design with modulation/automation of the pitch
(if we get the modulators, a pitch parameter could be also modulated)
Yes there is Melodyne, but also Melodyne has no pitch automation, it just detectes the different pitch values to change every single one without a graduate changing possibilty.
Im using "Elastque Pitch" now for pitch automations, a good plugin but with a HUGE latency...So huge that I need to bounce it after using it to avoid delays.