  Shared research infrastructure that is globally distributed and widely
accessible has been a hallmark of the networking community. This paper presents
an initial snapshot of a vision for a possible future of mid-scale distributed
research infrastructure aimed at enabling new types of research and
discoveries. The paper is written from the perspective of "lessons learned" in
constructing and operating the Global Environment for Network Innovations
(GENI) infrastructure and attempts to project future concepts and solutions
based on these lessons. The goal of this paper is to engage the community to
contribute new ideas and to inform funding agencies about future research
directions to realize this vision.
