well the prob with 3d is while its overall is cheeper, it does take longer, and knowing sony, they would want it put out asap to see if it make money and so they could make money, a live film takes usly a year or lil longer to complete while a 3d film would take up to 3 years to get done, and sony would see that as a cartoon, and after the egb idea which was sopposed to be based on gb3 (the idea and all) sony dont want to take the risk of making any gb3