Probably due to legal reasons the HiFo bylaw hasn't defined MCC and MCC's rules as HiFo's Council, but defined it anew under the term HFC with slightly changed name and basically identical rules.
What I'd want to get checked though is the binding of future HFC rule changes to a referendum, this needs to be kept for HFC rules (and probably for complete HiFo rules of which HFC rules are a subset). Haven't read the HiFo bylaws yet, regarding that.