Great summary. One of my buddies just swapped out his 991s lease with a M4. He said exactly the same thing. He loves the M4 but still longs for the weight distribution of the 911.
The rear weight bias came in handy yesterday—I was driving home last night from the mall, and a guy in a M3 convertible tailed me. He seemed a little douchebag-ish with his EDM blasting with the top down. Annie was like, “That guy is driving a little too close”. Anyway, we put plenty of distance after a right hand turn. The guy tried to follow, but he got dropped.