Beast Mastery needs a rework, a big one. In Legion and in BfA their damage was decent scaling up to top tier in the final season of the expansion. At the moment it is terrible.
Kill Command needs a damage buff, it currently hits like a wet noodle. I would recommend a 25% damage increase on this ability.
The 5-target hard cap on all abilities needs to be increased or removed. It is my opinion that this was a terrible game design choice across the board and should just be removed for all classes and all spells. If it is to be retained then it needs to be 100% consistent for all classes and all spells, full damage for the first 8 targets (soft cap) and fall off damage to any target over 8 dropping to zero damage over 16 targets (hard cap).
Beast Mastery needs Heart of the Phoenix as baseline. Instantly resurrect a dead pet with 100% HP, 8 min CD.
Beast Mastery needs better legendaries. It is clear that no-one who plays the class seriously had anything to do with the choices for Shadowlands (if they did Soulforge Embers would not have been the highest damage choice).
Suggestion 1 – Thunderslash (Legion Artifact Ability) – Activating Aspect of the Wild causes all of your summoned pets (including the second pet from Animal Companion and Dire Beast) to pulse nature damage to all targets within 8 yards dealing X damage each second split between the targets in range.
Suggestion 2 – Stampede (Removed Talent) – Activating Bestial Wrath also causes your pet stable to answer your call dealing X damage over 6s to all enemies within 6yards of the target.
Suggestion 3 – Dire Command Legendary needs to a buff to incorporate a 10% Kill Command Damage Boost as well as a 33% chance to summon a Dire Beast.
Most importantly the Beast Mastery Talent Tree needs a rework to make the choices more distinct and the gameplay more engaging.
Row 1 – Damage Profile Choices
Killer Instinct – Execute Damage Profile – REWORK
Kill Shot is usable on targets below 35% (up from 20%). Kill Command and Kill Shot deal 50% increased damage to targets below 35%.
Animal Companion – Sustained Damage Profile – REWORK
Summon Pet summons a second Pet that mimics your main pet dealing auto-attacks and responds to Kill Command at 20% effectiveness.
Most importantly remove the minus 35% pet damage aura it applies because it is applying to all summoned pets, those from encounters, quests, trinkets, dire beasts, etc. Leave all other pets untouched, just have the second pet do less damage.
Primal Instincts – Burst Damage Profile – NEW TALENT
Aspect of the Wild increases Critical Strike Chance by 25% and Mastery by 50% for the duration of the ability.
Row 2 – Rotation Modification Choices
Scent of Blood – No change required
One with the Pack – No change required
Dire Beast – MOVED AND REWORKED TALENT – Replaces Chimera Shot
Summon a Dire Beast that leaps to attack your target casting Stomp, Kill Command, and howling granting both the Hunter and the Hunter’s Pets 10% haste for 10s, 45s Cooldown.
Row 3 – Personal Utility Choices
Posthaste – TALENT MOVED
Exhilaration – No changes needed
Camouflage – No changes needed
Row 4 – Damage Boost Choices
Rapid Reload – NEW TALENT
Multi-Shot reduces the cooldown of Aspect of the Wild by 1s if it hits three or more targets. Cannot occur more than once per 4s (this is also the Beast Cleave buff duration).
Turns AotW into a 100s CD (instead of 120s).
Thrill of the Hunt – No change required
A Murder of Crows – REWORK
Call upon your crow allies to permanently attack your target applying a debuff that increases damage taken from your pets by 5%. Can be applied to a new target after 1 minute or if the target dies.
Basically this is Hunter’s Mark but it is a choice and may be a better one for pure single-target fights.
Row 5 – Group Utility Choices
Aspect of the Pack – NEW TALENT
Aspect of the Cheetah now also applies to any party or raid members within 40 yards. Turns Aspect of the Cheetah into a Raid Movement Cooldown and there’s no Daze as the original Aspect of the Pack had.
Sacrificial Roar – NEW TALENT
Command your pet to roar reducing damage taken by your party or raid members within 40 yards by 10% for 5s. 3 minute cooldown
Binding Shackles – NEW TALENT
Targets rooted by Binding Shot deal 20% less damage while rooted and for 2s after.
Binding Arrow should be a baseline ability and this makes it an effective Tank DR CD.
Row 6 – AoE Damage Choices
Stomp – No change required
Barrage – TUNING for damage balancing on this row
Explosive Shot – NEW TALENT - Take the MM Explosive Shot and put it here.
Row 7 – Pet Damage Choices
Aspect of the Beast - Might require TUNING for damage on this row.
Killer Cobra – REWORK
During Bestial Wrath Cobra Shot resets the cooldown of Kill Command and all your abilities cost 10% less focus.
Bloodshed – TUNING for damage balancing on this row