If the game doesn't appeal to you don't, purchase it, but from a business standpoint, the message Nintendo gets when a Metroid game doesn't sell well isn't that they did the wrong Metroid, it's that the Metroid brand doesn't sell. Which has been true for a quite a while now, so you can kind of understand why they haven't been putting a lot of investment into the franchise. I'm personally going to have to see more of Federation Force before making a purchasing decision, but if it flops, which is likely, I fully expect another 9 years before we see another Metroid title. In the unlikely event it breaks records, you can expect a swath of Metroid titles to follow. Not saying that's a reason to buy a game you don't want. Just saying that's how entertainment companies run their businesses.