I meant that other than a few benefits, such as priority waitlisting and an enormous baggage allowance which are benefits which most people would rarely use to begin with, there's not much SQ offers (or can offer, for that matter) to PPS members because they are most likely travelling in C or F anyway. Stuff like priority check-in/boarding, SKL/*G lounge access and priority baggage are already built-in to the regular benefits of flying C.

As Cathay Boy said, it's pretty much a status which is all prestige but no real benefits.