I would love to be able to make exploration missions in the Foundry, which then come up at random in Exploration Clusters. I know some people don't like Foundry missions, so there could be a setting where they can "disable" Foundry missions in Exploration Clusters and just play the randomly-generated ones like the ones suggested here.
"It's not safe out here. It's wondrous, with treasures to satiate desires both subtle and gross. But it's not for the timid."