I was thinking about this, yes it's the Wii holding things back, HOWEVER even without a Wii SKU, there are still potential problems. AFAIK you can't release a DLC "disc". It's stand alone or nothing. So for them to release, say a wreck it ralph DLC playset for Infinity, they would have to include the characters, the playset hex trophy, AND a DLC code. HOWEVER, for someone who bought this without a (decent) internet connection, all of the sudden their purchase becomes unusable. So yeah Disney can plaster "needs an internet connection and copy of Disney Infinity" all over the packaging, but for a family-friendly game like this, I'm not sure how well that would work. I mean most of the "internet connection required" software are for titles that people who are buying it basically KNOW one is required (MMOs, etc). So to take an otherwise stand alone game like this, release DLC that is a code PLUS physical figures and a physical trophy, would IMHO be a nightmare.
This "how they will updated the game" thing was one of my first thoughts when they announced the game. Sure you should not expect internet connection in something aimed towards childs. I am not sure if disc-based DLCs included with the playset would not work. We have seem plenty of "game of the year"/"complete" editions that comes with all DLCs from the game bundled. Plus there is some XBLA games that come bundled on discs. The discs would only install the DLCs on the console harddisk and then the game will be played as the DLC was downloaded. But again it would work on 360/PS3 but not on Wii.
The better bet, and IMHO there is no reason they can't do this, is to release DLC (for DI2, although technically there is no reason they couldn't do it for this unless the game simply isn't built to accommodate DLC) that uses existing characters. So release a Wreck It Ralph DLC, online-only, that uses the Wreck It Ralph figures.
but now thinking about that, that would also be a nightmare.. with people paying $10-15 for the DLC and then finding out they can't play it because they don't own any of the compatible figures.
Well a good option is to make those DLCs free of charge. Anyone can download them, but they can only be played by the ones who bought the required figures. Actually it is a good way to drive the sales of the stand-alone figures further.
The only good option as I see it is just for DI2 to allow ANY figures to play in ANY playsets. This could then allow for true DLC. Then again with how protective Disney is of ALL of its IPs, I don't really see this happening outside of Toy Box (i.e. Disney would NEVER allow Simba and the Seven Dwarves in a faithfully recreated Snow White playset)
The lack of a proper campaign is one of my main complains about the game. Playsets are fine but are only a collection of mini-games, they lack a story-driven gameplay. I started to play the game with my 5-years boy the last weekend. He played a lot of skylanders and love it. The only playset we played was the Incredibles. Although I have bought all the playsets available I could not convince him to leave the Incredibles playset after he started to play it (you know how small children likes to play something over and over again). He said he liked the Incredibles more than Skylanders but I am not sure if it is not only a novelty thing.
I found myshelf a little bit disappointed because we spend all the time with the playset using the same characters, he did not want to change them. This is an area Skylanders does it better it always invite/incentive you the change characters during gameplay, for accessing new areas, having more strength in others, or simple because theirs powers are better against a certain type of enemy. It is nice to have your little army on your front and choose the figures/strategy. Even death is handling better in Skyladers, when your character energy is deplated he is "tired" and should rest for the rest of the level, you have to switch the caracter to continue playing or restart the level (extra characters equals extra lives). As far as I understand in DI there is no penalty for loosing all your health, the character just breaks and assembles back again, right? (I understand that the game is for kids but even kids needs some incentive to play better).
There is little incentive to switch characters in any Disney Infinity playset because the gameplay from all characters is the same. Even if they have different powers, they have the same effect over the enemies/environment. Some vaults requires different characters to open, but that only looks cheap. I mean, there should be occasions that the strenght of Mr. Incredible would have to be required, etc. But that will require the player to have all figures from the playset, I understand why all the gameplays are equal because of that, but again, Skylanders handled it better.
This lack of changing characters made me feel like I was simple playing a Disney licensed game (even if it a good licensed game, it just looks like I was playing the Bolt game, Cars like the Cars 2 game, etc) instead a game based on physical toys. I was not constantly reminded that I have a figure in a portal, that I could changed it, that changing it would affect my gameplay/strategy.
I understand why Disney does not want to mix characters in the playsets, they are very specific to each world. But I believe a main campaign outside the realms of each playset would be a good idea. Just put all characters to confront some Disney Bad Guys in a typical conquer the world play and it will be nice. Keep the campaign levels generic enought to not damage the original Disney lore of the characters while mainting some references to all the stories. But yeah, it would be difficult to Disney to allow that. And another reason to difficult this vision is the inclusion of the Cars franchise. They look and play very different from the others (after all they are not anthropologic figures like the rest). I know they are a big money mover franchise, but they should not be in the game IMO.