It might have been suggested before. Similar to how it's done in the latest version of Studio One (http://bedroomproduc...e-3-routing.jpg)
Advantages of an audio splitter device:
1) Makes dry/wet knob on doofers obsolete (I think)
2) No more using 10 send tracks for seemingly trivial tasks.
3) Allows for more creative doofers.
EDIT: It should have amount for both the routed and the passed signal. That way you can use several audio splitters to split and "rejoin" anywhere you want.
Edited by joule, 15 October 2015 - 15:16.