Like its predecessor, the PSPgo has one analog stick. But, did you know Sony once considered putting two analog sticks on the upcoming portable?
In the new issue of Game Informer, Sony Worldwide Studios President Shuhei Yoshida says as much:
We also felt — like many users — that we wish we had a second analog on the PSP. But we are talking about the mid-life cycle of this platform, and the PSPgo is designed to be perfectly compatible with the PSP-3000 and all the games that released before that. So we had a very serious discussion about this particular subject, but we decided not to add a second analog, and some of the developers are doing quite a nice job translating the second analog functionality to different buttons. We didn't want to divert their efforts either.
So put it in a totally new PSP platform? Yes, yes, do that.
News: Sony Once Considered Second Analog Nub for PSP Go [Kombo]