With Blast Ball, I think the idea behind it was that it was supposed to be building up to the announcement. Basically, they did it to introduce us to the game so that we'd get interested, and then reveal it in full as a nice surprise. However, the idea went far south then what they expected, and I think it's because, as you said, they didn't handle the actual announcement of the game as well as they could've. It could've used more to have us understand what it was about, and I will concede that these details would've been better suited to have been revealed earlier.
Thinking about it though, @
Swampasaur probably put it best in the Nintenzone thread by saying that the game really could've benefited from having storyline details revealed alongside it. It would've clarified the direction that the game was trying to go in and helped in better connecting it to the franchise as a whole so that fans wouldn't have gotten the wrong impression about it. Granted, I highly doubt it would've completely saved the game considering how intense the negative reaction has been, but it may've helped in opening up some to what the idea was behind it.