I'll leave the technical discussion to the experts.  I just hope we'll be able to walk out to the end of it easily just like the present one, since it's such a great place to watch the ocean activities and look all the way down to the end of the Leeward side.  Also hope it won't mess up the surf.  That's where I learned to paipo board back in the '50s.  As for wave reflections, that's one of the most fun parts of the current one, catching the rebound at just the right point and launching into the air.