your are really making it complicated,, I understand,, but just work on one issue at a time,,
Im not really even sure what your goal is,,
if you want an aiming method, thats great,, I can do that and practice that,,
I can also shoot a short draw instinctive,, its two different ways of shooting,,
i have walked through the wood with a range finder shooting stumps,, its a good exercise,,and fun,,
develop a consistant form and practice that,, I have killed deer shooting a more conventional way point on,, and also shooting instinctive short draw bows,, but I practiced alot both ways,,
if you are shooting arrows that are not matched,, then you are limited to close range hunting shots,, that pretty much solves it,, practice that,,
if you want longer range accuracy,, you will need to shoot one arrow every time that is the same,, or arrows that are matched in spine and weight,,
shoot 100 arrows a day,, with a consistant form at close range, and then tell me what you think,, its more about the work you need to do,, than figuring it out in your head,, after you are shooting consistant,, then you will say ohhhh thats how it works,,