HUGE THANK YOU TO SOULESS-TREE FOR MAKING THIS PLUGIN USING MY STRATEGY AND MORE.
A few months ago a Gimp dev made a GEGL plugin that called Pango Markup. This plugin did not involve node rearranging. However just yesterday another guy made a plugin that works through node connections (like the ones I make). Check it out.
https://github.com/soulless-tree/soulle ... aberrationLooking at the code it appears call channel mixer 3 times on three different virtual layers then runs GEGL lens distortion