I must say that I use both things with Renoise, the Pattern Editor (tracker) and the Piano Roll Editor tool. So this discussion of what is better or worse no longer makes sense. We can already use both with Renoise.
If you are skilled with keyboard commands, you can compose like a bullet with Renoise. You can also record notes accurately by interpreting through the MIDI input. But having the Piano Roll Editor you to visualize the notes on a plane. This is magnificent! You locate the notes very quickly. This is tremendously useful for editing notes already written. In addition it does not come alone, but it is loaded with great complements, like the Chord Builder.
In addition, the Piano Roll Editor is a complete and quite direct editor, very easy to use with the mouse and also includes many keyboard commands and compatibility with MIDI input. It is a great tool that is currently maintained.
So we already have both worlds thanks to this tool. If someone gets bored when they get here, download and try the Piano Roll Editor tool.