The new “ State of the Game ” contains a few details about current and possible future updates to NW’s Foundry.  These updates include “improvements [that] have been made to the Foundry to prevent players from creating ‘speed leveling’ missions.” Regarding future updates, NW’s lead producer writes:

We also have a lot of updates in the works for the Foundry. It’s been great to see our players helping each other out, sharing their missions in our brand-new Foundry Spotlight forums , and contributing to the Official Wiki . Right now we’re bringing in more player-requested assets, along with expanded functionality for three dimensional editing. We’re also working to better organize missions in the catalog and aggregate legitimate peer feedback.