Reuters, speaks about the pressure placed on him and wrapping up the Metal Gear Solid storyline. Kojima expresses that the pressure to not only sell MGS4, but to help boost PS3 sales, isn't negative pressure to him. He believes that, thanks to a mixed metaphor by the translator, the pressure helped him "push up the bar" to create a sense of "positive pressure."
Kojima also tells Reuters that MGS will always be around, noting that he feels a responsibility to fans to keep the series going, though all the plot lines introduced in the MGS series so far will be wrapped up in MGS4. He says he'll take a different role with the next game and possibly sit in as producer when the "young staff takes control of the new series."