I think Green Day is a great band, and I am familiar with and like their radio hits. I am not, however, a fan of the band, per se. I don't have albums, I don't know or really want to know their deep cuts. More importantly, I play songs using the tour themed setlists or party shuffle. Either way, I do not want over 40 songs from one band skewing the RNG that bad (AC/DC is already a bit annoying at times, when a 90s setlist comes up in tour). And as great as Green Day is, I do not want every other song, or whatever, to be a Green Day song. I will be cherry picking three songs from them (to add to the two I had from the earlier packs), and that is sufficient Green Day representation for my setlist.
I think it is a great, read, option for some people. Thank you, Harmonix.
Edit P.S. Yes, I am aware Green Day has had more than five radio hits. I just chose my particular favorites.