It'll be interesting to see if they ever offer
FREE dining again in the future. Food isn't cheap anymore.
My guess is they'll nuke the free dining offers and go with deeper room discounts - with maybe a free ticket thrown in.
As for Disney food and the DDP in general, I'd expect to see higher prices and smaller portions in the future. Which wouldn't be a terrible thing. A ton of those large (often mediocre) portions ends up as a sad waste of food. And maybe it'll improve the menus. I'd rather have a larger selection with a smaller portion of good food than a limited choice and a heaping plate of blech.
As an aside - we've been eating in Disney restaurants for thirty years, and we KNOW the food and selection has gone downhill. WAY downhill. We haven't done a dining plan in years, and we don't plan to do it again any time soon. Even for 40 bucks a day, it isn't worth the price - or worse, what it's done to the food.
DisFlan