

Yep, fully agree. At least BluRays still exist for now. Building a beefy NAS and collecting full BluRay disks allows us to brute force the picture quality through sheer bitrate at least. There are a number of other problems to think about as well before we even get to the encoder stage, such as many (most?) 4k movies/TV shows being mastered in 2k (aka 1080p) and then upscaled to 4k. Not to mention a lot of 2k BluRays are upscaled from 720p! It just goes on and on. As a whole, we’re barely using the capabilities of true 4k in our current day. Most of this UHD/4k “quality” craze is being driven by HDR, which also has its own share of design/cultural problems. The more you dig into all this stuff the worse it gets. 4k is billed as “the last resolution we’ll ever need”, which IMO is probably true, but they don’t tell you that the 4k discs they’re selling you aren’t really 4k.
As an idea, I use an SSD as a “Default Download Directory” within qBittorrent itself, and then qB automatically moves it to a HDD when the download is fully finished. I do this because I want the write to be sequential going into my ZFS pool, since ZFS has no defragmentation capabilities.
Hardlinks are only important if you want to continue seeding the media in its original form and also have a cleaned-up/renamed copy in your Jellyfin library. If you’re going to continue to seed from the HDD, it doesn’t matter that the initial download is done on the SSD. The *arr stack will make the hardlink only after the download is finished.