Interesting project, but if the goal is to preserve the original format, you really shouldn’t be deinterlacing at all. Also, removing dirt originating from the cels, removing telecine wobble, and cel edges, isn’t preservation, but processing.

Agreed the official new masters are horrible, though.

[quote]This is what I’ve dubbed the KC effect (for Klasky Cuspo, who were terrible apparently). Here are 3 consecutive, “identical” IVTC’d frames[/quote]

I think those artefacts occur when a scene is time-stretched in post production. I’m not 100% sure Klasky Csupo would be to blame.