I realized that was only half my thought (but if you didn't get the parallel before, this probably won't help).
20th Annyiversary Optimus Prime IS the way I remember 1984 Optimus Prime WAS. Michael Bay OP, Beast Wars OP, or any other modern toy OP is not.
I guess that's a key difference to me between cleaned up FX shots (mattes, transparencies, reflections, etc...) and Special Edition like changes. Not that the original original original trilogy shouldn't be preserved for education or archival purposes, but if I could get a perfect version, I would like to see the mattes and whatnot cleaned up.