Well, there are enough fan edits out there to scratch your PT itch, but I gotta tell ya - you probably will never get CG Yoda in the OT. I mean, the digital version was deliberately downgraded to resemble the puppet.
But I will never, ever mind changes to the OT as long as Lucas budges and gives us the 77-80-83 originals.
You know that he will eventually, right? It's only a matter of time.