I understand parts of the route should make it less congested.

There are route segments that could be even more peaceful, but that means designing route that would include winding abit through some interconnected path routes from New Westminster into Vancouver..and people having slightly wider tires than road narrow tires. I'm not talking about mountain biking.

Going into downtown Vancouver has ....some quiet residential (and scenic) roads which are wider and would accommodate a large group ride...so no idea why on earth some of those streets aren't included.

I'm sure there have been some route improvements..