[I don't know where the original Discussion thread is (if indeed I created one)].
Summary:
-- enter the output (audio) track name prefix,
-- pick how many output channels you want (you get the first "N"),
-- or pick the individual output tracks,
-- select if you want them visible in the Mixer only,
-- pick how many input MIDI channels you want (you get the first "N"),
-- select if you want them visible in the Arranger only,
-- select if you want the Instrument and tracks inside a folder (with a Folder End track too).
Also (not in the mock-up):
-- enter the input (MIDI) track name prefix,
---------------------------------
FR in Issue Tracker (from 2009):
114 votes so far, but go wild.
http://forum.cockos.com/project.php?issueid=424