Same thing that always happens.
Right, erm, my point previously was that if you want to bring people together to work on a project you need to have a concept, preferably a well detailed one. Stating "Mixing Silent hunter 5 graphics with Battlestations gameplay would be pretty awesome" is extremely vague: basically everyone has a different interpretation of what that means. If people are to work together, they need to be on the same page, which means there need to be clearly stated goals; what is the game about? What are its major features? What mechanics will be in place? Target audience? Where will the balance between abstraction and realism lie? Distribution model? It goes on.
Also... doing something just because it would be awesome is not proper motivation. It works if you want to get a group together for an afternoon of shooting eachother with little paint capsules, but for a long term investment of time and/or money like game development people require more. Which leads back to the first point: a well detailed concept provides something someone can put some faith in, some level of reasurance the project will come to fruition and sell to/be accepted by an audience.
tl;dr noone knows what to expect at this point so noone is interested.