I figured I would update y'all......
I called AmEx again (in regards to another issue) and happened to ask about this. The agent said there are NO plans to offer SP to Gold and Plat AmEx holders as this would take away benefits from their Reserve CC holders, she said this is one of the major differences between the Reserve and the Gold/Plat cards (the others being SC and MQM earning).
After hearing this (and considering the mess SP would be if all DL AmEx holders had access to it) I highly doubt this is happening. Probably another DL IT glitch.