Originally Posted by Kalecgos

Any specific ones? I tried to crossreference the "tracker by country of origin list" with the "main tracker list" but it seems many of those are outdated/offline? (eg BitTorrentFiles, HDCenter, ...)

I'm member of hdclub and ultrahdclub

My highest priority is untouched (full menu, extras, etc) BluRay (iso or BDMV). I watch all my movies in english anyway, but I thought if I'm already going to spend my HDD space on extra audio tracks then it should at least include my native language (hdclub has lots of russian, polish, czech etc audio tracks because the BluRay disks are CEE)

Hey @Kalecgos,

Please have a look at Open Trackers Section, you may have an open account there, many German trackers opened in recent days.
As I mentioned in previous post, you should try to get some Asian trackers invites because they focus on users in that region, very easy to survive. They have many blurays (old and new). For new torrents, there are many seedboxes, VPS(s) and NAS(s). You can also request a reseed if there is no seed,... ect.
Actually, I don't know much about your seeding capacity and speed so I just suggest the easiest trackers to survive only, there are sure more trackers. But those recommended trackers are worth a try, indeed.