To be honest, I don't think this is going to happen. Apple has always been hesitant to mention RAM in the iDevices and I don't think they want to go down that route now. It seems like a mix of cost control and desire to control the narrative. RAM has a high impact on peoples' perception of "future proofing".
At the end of the day I think it's only fair to the customers that the RAM is mentioned on the Tech Specs page like for everything else.