iReal Pro-esque playback option

It would be immensely useful for composing jazz tunes to have the option to hear playback such as is used in iReal Pro.
It could read chord symbols from the lead sheet part, much like how it does currently, but with the more nuanced voicing and comping system of iReal, without having to write out drums and accompanying instruments.
iReal is a lightweight mobile program, so incorporating this system into Musescore would surely not be a heavy burden on computers.