It isn't spectacular, that's for sure. But if you think the concept of the game, art like that can turn into something spectacular.
EDIT, and like TESfanner said, if you're determined to be sceptical the way you've presented yourself as, nothing'll make you happy. Although, sometimes miracles do happen. When New Vegas was announced (so quickly after FO3) I was genuinely expecting something else than Fallout 3 with better story and narrative design, but with only somewhat better gameplay - yet I ended up loving the game (all but the gameplay).
I wasn't expecting the work of Michaelangelo. I was just expecting something relevant. But you don't get anything relative out of it other than a coterrie of survivors. I suppose it's vaguelly relevent. But I dunno, for some reason, world art sells the idea of what a game is going for more than a character art. But who knows perhaps it's going to be the 'main cast' of the game.
Also, I just check back, in regards to your question, objectively? No. It's not worth making. But to me personally, if a game seems appealing, and has an appealing plot, then sure, I think it's worth making. But that's just it, we don't know a single thing about Wasteland 2's concept, what it has in store, etc. granted these things come in time, but you get the idea.
Colonel nothing you'll read will make you like the game.

I don't like anything. *Cue grouch eyes*