I really do not see how the DDP in particular is too complicated. One TS, one CS and one snack seems pretty straightforward to me. About the only wrinkle would be the 2 credits for a signature restaurant.I've long said this...
Dining plans are too complicated. Too many rules. Sure most people who post here can handle them, we are the manic, elite of Disney fans. We read messageboards, watch the rumors, etc. For average Joe Family, these plans are difficult to understand, and so they are best avoided. I've steered people into it, even when they offered free dining a couple of years ago. Even free, one family said, it was just too much to keep track of.
Now weather you will save money using it or if it is a better value than DDE can be very complicated, even for us Disney vets. But that is simply a factor of the huge amount of resturants on property and nearly endless options and not a fault of the plan.