Evolve, or become a casualty of evolution.
Interesting to see your presumptions. As I write I'm sitting in the back of a simulator watching a crew fly an FMS driven RNP APCH approach using a 4-axis autopilot! Fewer assumptions and more facts might be useful in this discussion.....
I guess what might be quite interesting would be to know to what extent your proposals differ from either the GIANT procedure or the FAA OSAP with parallel offset, and why the differences if any? Also, whether you are targeting a particular aircraft and equipment fit, or just generic procedures. what receiver TSO fit are you assuming, for instance?