Or, how about spend the money ONCE and create a set or two of architectural design standards for use in city projects? These would include aesthetic design, massing, scale, accessibility, safety, etc.
This is really what the whole review is doing, attempting to make the design consistent with the surroundings, which is a worthy consideration. But literally re-inventing this wheel for every project id both wasteful and guaranteed to fail, as every committee will be different. Simply pick one or two, and maybe have a standing process to update it every decade.
Then, it's just specify function, dimensions, etc., and maybe "in SF-City Style A", and put it out to bid, and passe it through maybe one or two approval processes to verify compliance before digging, or even include that in the bidding process - submit your design & costs, meeting these standards. IFF the process is good and fair, they should get many good bidders (ya, big IFF).