JVisgaitis
Explorer
In breaking from tradition of this thread, I'm going to keep my response less then 4 screens. 
I think a boardgame is a logical start, but I don't feel that it should be expanded and supported. What you want people to do is purchase the boardgame and then buy right into D&D. So I think a boardgame should be able to take players up to 3rd level. Someone said it needs to be visually impressive, and I agree 110%. That's what first time players need so it should include minis, tiles, cards, etc. Production values need to be top notch for this product.
The story arc that is in the boardgame should center around a dungeon crawl, but needs to be very well scripted to draw players into the game so they care about the characters. The end of the boardgame campaign should not be a finite ending. What you do then is release a D&D adventure for 3rd level characters that picks up where the boardgame left off, and introduces people into D&D proper.
This adventure would have instructions on converting their characters and all of that and should also allow players to play the game with everything in it (no need for a PHB or a DMG). At the conclusion of that adventure, the heroes conclude the story arc started in the boardgame and world is opened up before them. From there, they would be directed to purchase the core rulebooks and start their own games.

I think a boardgame is a logical start, but I don't feel that it should be expanded and supported. What you want people to do is purchase the boardgame and then buy right into D&D. So I think a boardgame should be able to take players up to 3rd level. Someone said it needs to be visually impressive, and I agree 110%. That's what first time players need so it should include minis, tiles, cards, etc. Production values need to be top notch for this product.
The story arc that is in the boardgame should center around a dungeon crawl, but needs to be very well scripted to draw players into the game so they care about the characters. The end of the boardgame campaign should not be a finite ending. What you do then is release a D&D adventure for 3rd level characters that picks up where the boardgame left off, and introduces people into D&D proper.
This adventure would have instructions on converting their characters and all of that and should also allow players to play the game with everything in it (no need for a PHB or a DMG). At the conclusion of that adventure, the heroes conclude the story arc started in the boardgame and world is opened up before them. From there, they would be directed to purchase the core rulebooks and start their own games.