Shuhei Yoshida confirmed that the company "had a very serious discussion" on the subject, but ultimately decided against it due to worries over splintering the market.
"The PSP Go is designed to be perfectly compatible with the PSP-3000 and all the games that released before that," Yoshida said. For him, it's not a question of improving future games' controls but keeping parity with previous PSP iterations. "We are talking about the mid-life cycle of this platform," he says. Considering the PSP launched in the US in March of 2005, it appears as though Sony is sticking to its 10-year life cycle plan for the handheld.