I hate that most games ever, forces rangers to have pets. Pets should be a specc, not a must. Having a ranger that shoots bow and use dagger or shortshwords would be super fun, think Scout in dota. A middleground between assasin and ranger almost. A very mobile class that attack with dagger and jump back to use a bow. This could ofcourse also be an assasin build. That is what makes it so intresting. I belive there can or should be speccs on diffrent classes that share similarities. That makes classes a nice spectrum of sort.
One specc Ive always wanted to see it "Falconeer". I find it sad that has never been done, or at least done well.
As the name suggest you would specialize in winged pets. Eagles, falcons, ravens etc. The pets is not there to tank or manage enemy threat level, but there to apply debuffs and maim the enemy. Fly down, strike then back off. Give things like blind, bleed, confusion etc.
The diffrent type or debuffs could also change depending on the pets used. Falcon is more of a bleed and blinding type of pet. Raven gives confusion and help the character detect stealthed enemies. Eagle would give larger attacks and buff the player(MURICA!).
I cannot stress how fucking cool a Falconeer specc would be. It should be considered!
Third edit: To make the class more visually intresting. You could have the winged beast sitting on the players outside of combat and when you enter combat the bird go into the air ready to strike on your command.
I have to state it again: THIS SPECC HAS TO EXIST! IT WOULD BE SO COOL!