I’m probably in the minority, but I like the Epsilon remuxes and then compress it myself to av1 with ffmpeg. DTS-HD MA track goes to opus. I keep the English subtitles as-is.
You absolutely could automate it, but I personally enjoy making the encodes, so I don’t. Especially with movies, sometimes you use opus but on a select few, like the Dune movies, I keep the original atmos audio because it makes the movie experience better imo.
But for tv series, my ffmpeg settings are pretty static so it would be trivial to automate that.