Yeah, I understand that BM is about pets and beasts of the wild. My core desire with BM though is just the wish that they'd add just a little more to the rotation. Demonology Warlocks are all about using demons to your advantage, but the Warlock isn't just clicking one button most of the time. He/she is casting spells like Call Dreadstalkers, Hand of Gul'dan, that summon even more demons, and using them in a way that they can manage their resource of soul shards to keep the rotation going. Even the buffs and channels they cast give you a bit more management over your summoned demons. Compare that to a Beast Master which is just shooting one type of arrow and one or two damage buffs while your pet and sparkle wolf do everything else.
TL;DR I wish BM hunters had a rotation where they were a bit more involved. Shooting one arrow and casting one buff spell feels a little too simple imo. You can introduce spells and abilities that add to the rotation without breaking the fantasy.