This is part test, part self-promotion, hope that's cool. I've been playing and teaching guitar (everything from rock/pop, funk, r&b, jazz, and classical) for more than 40 years & I've written a short book that addresses new ways to approach harmony and chord construction primarily for jazz guitar. It's called "Loosening the Grip" and is available on Amazon. Please have a look; if you apply this material it should give you some fresh new ideas as to how to address playing changes and comping:
Chuck