Renoise could have a project interface. The project allows you to open multiple songs at the same time. There is a master mixer including an assignable cross fader and a cue for headphone monitoring. There are new meta controls in the song that send and receive controller data between the song and the master project. There is a set of meta controls in the master project that you can hook up the to the new song meta controls. There is an ordered song playlist with the same pattern sequencer controls to loop sections of a song.
I’ve always thought about something just like this for old XM songs. It would be cool if Renoise had something like this but I think people’s computers might explode with the all the DSP and VST going on, etc.
Multiple turntables, multiple computers, multiple instances… and a mixer.
So, if this suggestion was to become reality, I wouldn’t like see it happening in the main application but rather in some sort of inbetween (a “mixer” application)