I'm honestly not sure where D&D should go from here. The original game was ground-breaking, and so was the standard by which other games were measured. Now, not so much.

Personally, I don't care so much about the physical tabletop experience, I am much more interesteed in how the "digital" experience evolves, and I am not sure that current D&D has much to offer there, as it would need to re-invent itself to be ground-breaking in the digital medium. I suppose that 4e was that attempt at re-invention, but it looked more like a copy of other successful digital IP rather than a genuine attempt to re-imagine D&D.

I continue to hold the D&D lore and world-building in high regard, but I feel the game itself is in decline. I'm sure that many people will hold the opposite view, and will happily support One D&D and future versions, so I expect it's future to be secure.