Geez get over it.
What most of us were bothered by was that they got to cover a
recent single - not that they're doing covers, they've done that for the past few (most) singles anyway. S/mileage has some really good singers, considering the slow tempo of this one I'm pretty sure it'll sound great. It's just a bit boring since we already know the song.
And for your information, Berikyuu have done covers of other H!P songs, too. Only current H!P units that haven't are... well, Mano Erina. And MM if you don't count their self-cover of Morning Coffee in 2002.
The fact that they use the
b-side as the theme song for the movie, makes me wonder if they have something else in store for the a-side. That would be great, really.