Originally Posted by
RogerD408
There is still little difference between gold and platinum as far as property benefits, if any. So shooting for Platinum is, for all intents, just a status play.
The way I see it, the biggest advantage of going from MR Gold -> MR Plat is the fact that it gives you the same upgrade on SPG into the bargain. And SPG Plat is worth a great deal more than SPG Gold.
Plus, if you're already Gold then the MR Platinum Challenge is easier to meet than the SPG one.