Just no. We are barely over middle of pack even in full single target:
https://www.warcraftlogs.com/statist...e=7&dataset=90
That is Guam results which afaik is close to perfect fight for ferals.
In mythic+ we are close to worst class/spec you can bring in to run. Only really good for some specific cases like if group needs extra taunt for necrotic boss.
Your +15 DHT 3 feral run did show exactly how bad feral is: before that there was doubt that maybe feral can be good with right legendaries and with skilled player piloting. But when some of best feral players with close to 890 gear and bis legendaries do same overall dps over dungeon as most other classes do at 880-885 item level, it tells lot just how bad we are in m+.
Serenity published around same time video of them doing that same DHT dungeon at +20 difficulty so its pretty easy to compare runs. Difference between +15 and +20 is what, 40% more hitpoints? You had tyrannical, serenity run had fortified. So comparing those two runs, bosses had about equivalent hitpoints, trash mobs in serenity's run have like ~50% more health. Both groups about equivalent geared. Both groups did dungeon in about same time.
How to possibly fix feral trash dps and also give bit of needed boost at raid bosses:
Make AB proc automatically for
first Rip put on new pve target (maybe with hidden 60 sec cd to prevent abuse, no proc if target has had Rip active any time during last 60 seconds).
This would give faster ramp up burst on trash while still keeping bleed class mentality. Also would fix problem where spreading dots around trash mobs make it clumsy to proc AB on already running Rip, one should use combo point generators on target with already running Rip but at a same time one should spread Rakes to other targets which cannot proc AB.