The Audio Channel's output can only go to the right.

The Group Channel's output can only go to the right, and cannot be output into the Send Channel.

The Send Channel's Output can go nowhere.

The same is true for the sends. Don't get me wrong, but that seems like limits on where routing can go; "wild" just isn't the right term.
Plus, a Group Channel and a Send Channel can be either mono or stereo...I don't see your point with all that. Simanalog won't work on a Group Channel or a Send Channel - it's an old plugin that needs to be updated to work with SX stereo channels. Big deal...
@Majken: understood about the Sends. God, I still have to try that x-fade thing...
