This is just a random thought about how to outreach community of developers/students around the world and get them on board.
As an Open Source Foundation, erpnext foundation could participate in Google Summer Of Code which is global program, focused on introducing students to open source software development. Students work on a 3 month programming project with an open source organization during their break from university.
As a part of Google Summer of Code, student participants are paired with a mentor from the participating organizations, gaining exposure to real-world software development and techniques.
In turn, the participating organizations are able to identify and bring in new developers who implement new features and hopefully continue to contribute to open source even after the program is over. Most importantly, more code is created and released for the use and benefit of all.