I have primarily used Plex and pretty much everything you said is accurate for Plex as well. Limited transcoding based on the machine it is running on. As disc has become cheaper, I have pretty much stopped doing batch transcodes, which is great for the most part. But there are definitely negatives when you want to watch something offline, or remotely. Biggest pain point is subtitles though. Since they aren't ripped as text and then sent to a client, they have to be burned in to the video itself and transcoded on the fly. Which means losing out on 'forced' ones if it can't transcode fast enough.

Plex has definitely started to try and commercialize itself more and offer other stuff, when all I want is access to my own media. So I may look into Jellyfin more soon.

As for batch transcode jobs, I had a system that I was able to set up as essentially a black box. Drop a rip into a folder and out the other side comes a smaller one at a reasonable quality. With forced subs burned right into the actual video. Mostly based on https://github.com/donmelton/video_transcoding