Metroid has come a long way in recent years. Though it has always been somewhat of a third wheel when it comes to Nintendo games, the Prime series brought in many new fans, and though it was quite different from the 2D counterparts, it still managed to bring that sense of isolation and loneliness we've come to expect from the series into a new realm. With the Prime trilogy completed, many gamers wondered what was next for the series. They didn't have to wonder for long. At E3 2009, Reggie…