Plaguescarred
Hero
My favorite is the D&D Starter Set so epic!
As for the little blurb on the bottom, if you're really "the greatest", you don't need to keep telling people that you are.
Maybe I'm reading too much into that, but after considering the fact that "world's greatest RPG" is appearing in every cover we got to see, it may be somehow related to their licensing strategy. We know that this phrase has been used by third party publishers in the past to describe compatibility without violating intellectual property, and maybe WotC wants to discourage that by making it part of their basic description of D&D. I don't know, just something that came to my mind while thinking about it.
As for the little blurb on the bottom, if you're really "the greatest", you don't need to keep telling people that you are.