Ok, time for my two cents, hehe.
First of all - The M-line predictions do seem underestimated (for the future) Whenever i am on the train (M-Line) it is usually fully seated or standing room only, especially during school days. Commercial, Brentwood, Production, Lougheed & Braid to a lesser extent are all very busy stations, and areas such as Lougheed, Brentwood, Holdom, etc... all have great growth potential, which we are already seeing. The Evergreen line will be very popular in Coquitlam (just gathering from the buzz i have heard from my numerous friends in the area wishing for skytrain over the past 10 years) not to mention it will attract many riders from the WCE, Poco, Maple Ridge, Pitt Meadows etc... which should further boost the M-lines numbers.
Second, - I don't quite understand what is meant by "shuttle" can someone please clearly explain that term to me, for some reason when i hear shuttle i think of those small handy dart buses
Third - At grade LRT would be an insanely bad choice. First of all Vancouver streets are not wide like other North American streets where it is easy to take space out of the road for trams with little disruption to traffic. What attracts me to ride transit is speed, i like skytrain and heavy rail. look at Japan for example, almost no trams in the cities, all grade separate metros and heavy rail. Many people would rather drive in their own personal car if transit is going to be equally as slow and annoying. Also, what happens if there is a car accident on the road? At grade to me seems more dangerous, all we need is some drunk idiot to get run over or some drunk driver to run into the train to stall the entire system. Broadway is a major business corridor that links the provinces largest university to the transit network, such an area requires true mass transit, a metro such as ALRT. LRT is perfect for small branch lines to connect small neighborhoods to the main stems of the train network. When will people figure this out? That is what makes a successful transit network. Portland's ridership numbers are actually very low if you look at them, people tend not to mention this. Building ALRT is thinking for the future, building this line as LRT is thinking Vancouver is still in the 1930's. Not to mention that building it as LRT will add another unnecessary transfer point from the M-Line. This is a no brainer, LRT is out of the question for this line. I also find it so funny he references bullet trains, haha, ALRT is nothing like a bullet train, does he even know what a bullet train is? So funny, i love it.