[mhd]

I often find myself using the lower point CoHs for the previous professions or some generic social mores.

Higher valued ones are almost always external, existing codes. Knighthoods, religous orders etc..
Someone defining their own encompassing and rigid code always struck me as a somewhat old-fashioned literary trope, suitable for the Heinlenian ubermensch, but rarely someone more realistic. Other disadvantages like Pacifism and Honesty seem more innate.