#4
Sounds like you could just automate the panning for an effect like that, I have done it myself a few times. Do you know how to do that ?
There is poetry in despair.
#6
like a L/R delay?
or auto pan?

sure...

to automate a Pan, click the "trm" button on a recorded track and click points on the yellow line to make handles which can be moved up or down.

read the manual for more help