Why must stamina be irrelevant as an archer? I don't think it should be. Resources in video games has always been an important and defining factor of gameplay, since it gives the player an artificial limit to their effectiveness, one which they must learn to properly play around in order to succeed. When they are able to succeed, it gives a feeling of satisfaction and triumph over what might be seen as one's personal burden. It really doesn't make sense even from a realism/immersion standpoint either. Wouldn't constantly tugging at a long bow's tight band be exhausting after a while? Wouldn't having to kite an opponent while simotaneously pelting him with arrows be even more exhausting to even a trained archer?
I feel that drawing an arrow with one's bow should cost a certain amount of stamina, with stronger bows costing more stamina per arrow drawn. Moving while an arrow is drawn should also cost additional stamina to be drained while the player is in motion (heavier bows will drain more stamina if an arrow is drawn while moving), meaning that your ability to kite (and how long you're capable of kiting) will be linked to how much stamina you have. This means the player will be required to better position him/herself during combat scenarios so using a bow while moving isn't as common or required; it also means the player is required to aim his/her shots more carefully since a missed shot with an arrow is wasted stamina. Making stamina a relevant resource for Archery would greatly improve the play style of the spec, in my opinion, especially considering how simplistic the spec is to play already. (Besides aiming at targets at a long distance, there really is nothing remotely hard about playing a pure archer)
There are other issues with the play style I'd like to address (such as Power Shot/Bullseye stagger/paralyze locks), but that can wait for another time.