I get a little extra design too but I balance out by late game, not sure if it's my play style or it's normal. The game tech and design points are a function of both your people working on the game, the tasks they are assigned (on Medium-sized games or larger), and how you weight the various game components during the design process. So if you do a lot of Dialogue and Story-heavy RPGs, you will tend to generate more design points. If you do more Action and Simulation games that rely on cranking up the Engine bar, you will generate more tech points. I think some of the areas give mixed points like Graphics and Sound (basing this off the specialist options in the late game, not 100%).