Fran Berting has written a very good essay in the Monitor explaining how Ordinance 555 might not be a particularly good idea from the standpoint of managing large projects. I suggest it as required reading for anyone having an interest in this issue.
I particularly agree with Fran's admonition: "...think a minute about what you are asking for..." as this proposed change in County governance may well make many large projects unmanageable in terms of real world issues that are involved with any major public expense. Not to mention, how many citizens are willing to put in the time needed to get on top of these public works projects at an early state.
Go read Fran's essay.