I agree that's a daydream
I can't see WotC returning to anything 3.x based - that would be direct competition with Pathfinder why would they dilute the brand/market?
Whether 5e will be as radical a departure from 4e as 4e was from 3e seems very unclear to me. What I actually expect is the difference to be more along the lines of how the game is published, played and promoted rather than how the rules work mechanically. Expect more Essentials and DDI type change and less fiddling with dice mechanics.
But then what do I know? It's your pipedream...