I suspect I will take more than a little flak for this, but from my perspective D&D Next will live or die on the basis of its digital apps (particularly iOS and Android).
Why?
- A good digital aide will smooth the transition for new players and those like me who are hanging on to previous editions.
- D&D Next purports to offer a simple game with Core Rules, or rapid integration with more specialized rulesets, maybe even older rulesets. I digital aide would help players and DM's handle this integration from game to game or even within a single session.
- The 3rd edition and 4th edition digital aides were lousy, particularly at launch time. It was discouraging for new and experienced players. If D&D Next's aide works will at the editions launch... Boo ya!!!
- I loved the books--particularly the 3.0-3.5 Forgotten Realms books. But dear sweet beejeebies what a pain to bring them to a session! D+D Insider's lack of mobile platform support (iOS, Android, mobile web) meant a laptop with wifi was needed. I love laptops, but they detract from group interactions.
- Slickness---just think how sweet it would be to have players using their smartphones, DM on a pad all connected (wifi or cell). DM keeping track of initiative, and pushing out conditions, bonuses, penalties to the players.
And that's the short list. I know that I should be more concerned with the rules, but to me this edition will sink or swim on its digital aide.
One last item---a great digital aide could crossover to PC/Console games. There is a reason I am playing Baldur's Gate in my iPad!