Noise does not equal workload.
Am I to understand that you want to add procedural approach functions to multiple airports on the one sector as well as the old FIS functions as well as the old CTA functions? Wasn't your issue with C steps into procedural towers that the attention would be taken away from the airspace close to the airport by things happening 9000ft away? Are you seriously suggesting that one person doing multiple versions of this with things to distract 40000ft+ away is OK?
Like I said previously above, I have no doubt E down to 1200 or 700 is a great plan for safety. How to resource it is the problem. 1000 controllers vs 20000 controllers over near identical airspace volume probably shows problem number 1 I'm sure you will agree.