Inb4 the real piano roll?
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EDIT: The color theme, as requested: https://dl.dropboxusercontent.com/u/6812754/joule_best.xrnc
Nice one. Kinda reminds me of an idea I presented (6th paragrah) here not too long ago. The only difference being audio-tracks instead of piano-roll, in the automation-window. However the piano roll / audio tracks / automation could of course share the same window.
Just like any other DAW with other words? I think we’re just inventing the wheel again, guys. 
But that can be a good thing sometimes.
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BTW: in Renoise it isn’t even possible to move/drag / microshift a note start/length on the grid using the mouse+keyboard. Or at least I haven’t found a solution for that. In all cases it’s necessary to enter delay values by hand, or use midi recording instead. And that is so cumbersome.
Speaking of the delay column, to begin with, I’m quite convinced it has to be changed so that the notes has to be on the lines where they are closest to from a workflow pow (whichI’ve suggested before). Along the way, in the same topic, I was actually onexactly this subjectyou mentioned as well (3rd paragraph). 
Still, maybe not as intuitive as a piano roll for this particular adjustments, but from a tracker point of view these two would make definitely make life easier.