This is awesome and I still only have the DVDs, R1 DVD for Season 1, 4 & 5 along with R2 UK for S2 & S3. No doubt I figured the Mill Creek would have great video but it’s lacking subtitles of any sort and the aforementioned few missing songs.
Guess handbrake would be ideal to take MKVs of the episodes and add English srt files for the subtitles. I’d want both regular and SDH ones.
EDIT: DO NOT apply any DVNR or EE! Leave the film grain as-is!