How many assets do you need? When is an asset good enough? Now multiply that. Acquiring visual and sound material involves a huge volume of effort. When the cubes, planes and pills that have been so useful for bringing the game to life must give way to the final assets; when the two handmade teams that have been with me since minute zero have to become 16; when those 22 players have to become more than 256; when sound effects are needed for anything that moves; when you want your beloved system to be not just functional but also attractive to the players...
At that point, you have to ask yourself: What do I have? What can I afford? Think, decide and keep working. Let the ball roll!
Vice Sallés