I submit that there are different levels of design review. For example, the basic level of review is to determine if the design is adequate/safe to carry all of the various loads- live and dead plus wind and seismic.
Another level of review is more of value engineering to determine if a different system of framing or foundation or other things would be more cost effective. Also to see if the system shown will resist corrosion, be free of drainage problems, etc.
Stan Scholl, P.E.
Laguna Beach, CA