Why would they make a DSi special for a game that could not take full advantage of the DSi's features, especially if the DSi also could not support all of the features of the game?
If the game can use the backwards compatability to Gen III, then putting it on the DSi doesn't make sense. "Here, have this new special edition system that doesn't have the right features for the game we're promoting it with" isn't the best marketing strategy. And if they disable the backwards compatability, well, I'll be just a bit disappointed.
Though I freely admit to hating the DSi with a passion, and I hope the system fails and dies.
Anyway, after some of the things Nintendo has added to their games, I just really hope they don't put any gimmickry in these remakes.