yes, it can nice to use the mid-side collapse/expand input mode in Precedence with synths (and real instruments) that have ping-pong or other spatial delays on them. Putting Precedence after delay effects can be quite interesting bc you can narrow the image of the ping-pong delay some and then reposition it with P. If you do this differently with different synths you can get quite cool and dramatic effects where each synth can still be lively with a lot of motion in it from the delay, but still have a a distinct position relative to the other synths in the mix. You example shows this sort of thing well.
