That is what is wrong with SPG
Quite frankly guys, this is why I stopped using SPG exclusively - and now I'm only gold.. I had to work at staying PLAT - and I never felt that worked nearly as hard at offering us the benefits they describe in the book.. Consider the OP in airline terms.. As an EXPLAT who watches FC seats go empty while he/she sits in coach.. You would go bonkers.. The advantage that SPG has - is - exactly what the OP points out.. They can hide their inventory except what you see online.. I wish I felt like they did care, but now I always book exactly the room I want - and if the upgrade happens - it is purely a surprise not any form of an expectation..