Surely the original poster is just winding us all up.

The whole point is that Singapore Airlines has two programs: KrisFlyer (which caters for economy and occasional premium class passengers) and PPS which is absolutely purely and simply for people who purchase First and Business Class tickets.

The poster flies Economy a lot, and has reached the top level of KrisFlyer status and wants to be given PPS status, even though he has achieved 0% of what is required to qualify, namely buying lots of Business and First class tickets.

Good luck to you, but you shouldn't get this.

As other posters have said, split your travel so that you get Gold with several airlines and maximise your upgrades on them.

But really, if you get PPS status it's a disgrace!