What needs to be shown is what happens when you take the 60 FPS version and take it back down to 24 to cut back into the movie. I imagine the effect will be pretty much the same as it was originally.
I tried this while working on ESB:R. The results weren’t great. In many cases the effect looked worse than the original stop motion. You are losing so many frames going from 60 to 24. I tried halving the frames and then interpolating them back to 24 and it worked a little better but , even when going from 24 to 60, you get weird artefacts where the program tries to interpret the missing frames and causes horrible results. There is one shot in ESB:R that ended up in the final version ( the TaunTaun shot running across from right to left just before it stops on the ridge and we first see Luke) In the end i used added motion blur to just the stop motion objects to smooth out the stop motion and this worked better than using the frame interpolation method. I have used the same method on the holo table creatures in ANH:R HD
I really don’t see the obsession of this whole 60fps interpolation thing. why do people think this looks better, when all it does is eliminate any filmic look and gives the horrendous " soap opera" effect. Everything looks fake. It also makes the models lose the intended scale. Looking at that clip, the AT-AT’s now look like small models , especially the closeup shot of the head, and the Rancor, which wasn’t even a stop motion creature anyway, has lost its scale and looks like a small puppet.