I'd love to have some bonus content included in my digital-only purchase. Something like the making of Elemental, soundtrack, digital versions of artbook, Bradley Wardell's best-selling novel (coff, coff), maps, among other possibilities.
The boxed limited edition is nice but in my case the less physical stuff I have, the better, especially with games. Others simply like everything digital.
So, how about it? It's still some extra bucks that you guys would be able to get from suck... I mean... fans of the game. Also, since there's no boxed version release in Europe (if I'm not mistaken), this would come as an added benefit.