So I'm trying to get my mixes more mono-compatible, and understand that using stereo imagers to narrow the sound can help with this (I’m using logic’s direction mixer currently).  I was wondering if a plugin exists that can do this dynamically.
 
By this I mean that it reacts to the stereo image like a compressor would, so that when it gets past a certain width threshold it starts to narrow it.  I realize using a dynamic EQ (like voxengo glissEQ or ozone’s dynamic EQ) in mid-side mode could sort of do this, but I haven’t found a plugin that can reduce a stereo image like this over the entire frequency spectrum together.  I feel like it wouldn’t be that complicated of a plugin to design, and would help a ton with getting your phasing right in mono.  So yeah, does something like this exist?

Always thought Joe Ford and icicle pull of some serious studio witchcraft, both their sound design and mixing are so tight! https://www.youtube.com/watch?v=3ADhcNduHT8

Man this is sick!  The swing almost reminds me of rockwell's new album.