The media can't remember but President Trump went to Riyadh and in front of God and the world announced the new mideast
The signing yesterday was a manifestation of his address to all Arabs in Riyadh
I agree with you, that this signing was the fruit of a major effort, started right at the beginning of the Trump Administration.
At the time, the Saudis hosted a huge event, with representatives of sixty Muslim countries. President Trump addressed them, and told them all that it was time to withdraw funding and ideological support from jihadis and terrorists.
I expect it is likely that a Saudi signing will be done in a similar grand Saudi style, with a similar impact across the Sunni Muslim world.