There are any number of plans for the exploration of space out there in the marketplace of ideas. In the absence of much real-world progress, there is an inclination to plan for when there might be progress in the future. This often becomes a competition in the marketplace of ideas as agendas come into play, and some aspects of space exploration (and maybe development) are highlighted to the detriment of others as personal goals come into play.
One effort to address this was the Integrated Space Plan, which tried to take a meta approach to looking at our space efforts and determine which activities and technologies fed into what aspects of humanity's move out into the Solar System. Which aspects of exploration and development should be highlighted? How might they connect? What can help enable what else? Where are the synergies?