Yes it would make far more sense (given the market) that they've got Bieber-fever and are out to capture him or whatever muppet the 12 year olds will be listening to at the time.
I like the human designs, and this is definitely one of the less serious space themes they've come out with. I'm not really a fan of the retro UFO's though - it's been done to death. Lego being Lego meant this was never going to be their version of Halo, and more of a bubbly, Mars Attacks without violence style.