My understanding is that the problem with the color separation master is that that films have shrunk at different rates. In the early 90’s that meant they were useless. It is 2020 and I can’t even count the number of old technicolor films that have been restored from such non-aligned masters by doing it digitally. So an excellent restoration could be made from them today.
The negative was badly faded in the early 90’s. If storage conditions have been improved and it has been cared for, there is no reason to assume it has faded more. And we don’t seem to be in a position to know if a new color separation master was made to archive the negative so that even if the original deteriorated, they would have a copy as it was then. The new D+ scan (which appears to be 8 years old at this point) shows as much color as any of the older telecines made from interpositives of the o-neg. So whatever the state, it is good enough to get a really good scan. So whatever they have done since the early 90’s, the film is in pretty good shape.