Never be complacent with mediocrity. Flat baseline buffs is lazy when many specs fundamentally do not play smooth.
For example, Beast Mastery kill command hits for almost exactly the same amount as the spammable Cobra Shot. Because its so under tuned any talent or legendary affecting it is also awful. So instead of a flat 5% to the whole spec which doesnt fix any issues, they could of target buffed kill command by 20-30%.
Arcane doesn’t need buffs, it needs a complete rework. The damage is fine, but the rotation is scuffed as hell and it sucks on the mobility department when compared to Frost and especially Fire.
Why keep giving out these aura % buffs. Havoc Demon Hunters need much higher single target damage increase not a 3% buff to all skills. Put some damage into Chaos Strike, Blade Dance, Demon’s Bite etc.