I am working on trying to remove some unneeded complexity for our current network setup and looking for some advice/prior examples and experiences to help persuade some others to avoid this topology. We currently have a core ring of 6 routers, but only 2 of them have an internet exit. My thought is that the routers without internet exit points should really just be designated as a distribution type switch as these really just aggregate traffic from multiple sites downstream. I feel that the non-internet connected core devices really just add unnecessary extra hops to arrive to their destination given that there is not really a hierarchical traffic flow model once it hits the core.
Can anyone share their experiences with a Core Ring running EIGRP that caused them to move away from this design. I am using Cisco's SAFE documentation (link below) to back up my reasoning in moving toward a new core design, but having a few "real world" stories to add on top would really help sell the solution.