xd_1771, I do think that the idea you've brought forward is a good suggestion that could improve transit in South Surrey, but I don't entirely agree with this idea.
One thing to note is that the 351's main ridership isn't at the park and ride, it's the stretch of the route that's between the P&R and White rock centre. Unless there's tourists going to Crescent beach, the 351 into white rock usually empties out at white rock centre. I don't think that there would be enough ridership to justify the FTN designation of the 351's current routing west of WRC.
I don't think that your comparison of the 351's Vancouver portion being cut with your proposed idea is fair. The added transfer to the Canada Line was justified because it proved to provide
shorter travel times for all riders to Vancouver. By adding in another transfer at the P&R, you would only be increasing frequencies at the
expense of the overall travel time. I still don't think that adding in that extra transfer would bode well with the people who take the 351, which would take a hit on ridership levels.
I also don't understand your argument over the "accessibility" of using low floor buses over the coaches. You'll notice that most seniors that take transit all use the 351. I hardly ever see seniors take the 321 into Surrey Central. And anyways, won't the seniors/strollers still end up having to get onto the orions at the P&R?
To put it bluntly, I think cutting off the entire local portion of the 351 is too extreme. Why not just cut the route at White Rock centre and run your proposed loop bus between white rock centre and the P&R via 16th, 128th, and Crescent rd? This obviously wouldn't offer the same cost-savings as your idea, but it's a start.
Also, I misread your earlier post. I accidentally glossed over the 321 portion you wrote about