We need to get a release of the Platform out soon. OpenMRS Core 2.1.0 was released in April 2017 without a corresponding Platform release, so the next release of the Platform will be version 2.2.
Per the Platform Vision, we would like not only to bring add new features to the Platform, but also incorporate some of the modules which are used by nearly every implementation.
Here are some other possibilities, inspired by being near-ready-for-work, and not because I have any specific reason to believe they are high-value for implementations: