Recently, Niantic released the PokéStop nominations for Pokémon Go players. As part of it, they have created a new page letting players know what makes a good PokéStop nomination. With visuals and examples. It’s very similar to the OPR guidelines and I think can help reinforce what Agents should be submitting for the portal network as well.
Ingress Agents will still be reviewing these submissions as well, so expect there to be more opportunities in OPR to get aggreements and work on your OPR badge.
At this time, nominations can only be reviewed by qualified players in Ingress, another game offered by Niantic. This Ingress community reviews nominations for inclusion into Ingress as well as Pokémon GO and other Niantic games. However, keep in mind that not all Ingress Portals will become Pokéstops or Gyms in Pokémon GO. In the future, we hope to make the nomination review process available to Pokémon GO players.