1 - I don't understand how something like a 15 minute ride or walk uphill narrows the demographic of an entire sport, especially on a mountain where 30 min to 1+ hour rides uphill are the mandatory do any decent amount of descending. As is walking some "downhill" sections of trail (like the BP trail). I believe Mount Fromme is self-selecting for the demographic "that rides up hill to ride downhill". Also, I believe Lower Mainland residents far outnumber tourists on Fromme, especially outside the peak summer times.
Believe it or not, Duncan, not everyone is as dedicated to riding and fitness as you are. Besides, laps of Bobsled are a lot faster than 30 minutes. Not everyone is looking for a decent amount of descending.
In the past, the NS trails have been geared towards dedicated riders. Bobsled is evidence that there's a much broader market out there. By reaching out to these people we increase support the trails and grow the size of the riding community.
2 - Can you explain where the current parking issues on Mountain Highway? As Resnick pointed out, I too have never had a problem finding parking on Coleman - I believe the residents are more concerned about traffic through their neighbourhood. A parking lot at the top of Mountain Highway will not solve this problem … in fact it will push more traffic further up the hill.
You'd have to talk to the residents. My guess is that's it's more of a problem in peak season.
I know it would annoy the heck out of me if I had to park even a 5 minute walk away from my house because my street was full of cars with bike racks. Imagine how you would feel if this happened to you on a rainy day with your grom in tow.