I guess an ideal preservation would be to reasseble the episodes from the 35mm neg which would get rid of both wobble and cel edges, but as this would be largely impossible. Deinterlacing and IVTCing gets us one step closer to the cells as they appear on the negative (99% will be original progressive frames rather than interpolated frames).
Then you would have to re-do all the video effects, which the early seasons made extensive use of.