Yes, this helps.  I use this technique also.  For music, it is common to mix stereo with say bass on one channel and guitar on another.  Be subtle though, eq just enough to hear the difference.
In a message dated 9/25/2005 2:58:29 PM Central Daylight Time, writes:
You could do some complementary equalization on each track (more high
frequences on right, less on left, opposite for high medium, etc). This
could work, using also time shifting as you've already been told.