Interesting ideas.
First question. What camera view would this be in? I don't think it would work in the current view. The camera is too far back to be able to see where the QB is looking without any other visual representation than his head. I don't mind not having any visual representations for it. I actually think that would cause an interesting real life dynamic, of defenders seeing where a QB is looking, but not being exactly sure which receiver he is looking at. But the current camera doesn't lend itself to seeing something as nuanced as where the QB is looking. Would be fine for the AI obviously though.
I see what you are trying to do with the look at receivers for 3secs thing, but that is WAY too long. No one has to look at a receiver that long to be able to throw an accurate pass. A second, if that, is more than enough. If the QB is accurate in the first place anyway. You would need to throw to your first read almost all the time, because you aren't gonna get that much time in the pocket. Not to mention the fact that if you saw a receiver open, if you have to wait 3secs until you can throw it to them accurately, there is basically zero chance they will still be open.
I know that everyone would like QB awareness to mean more than it does, but I don't think that the best way is to make it so that low AWR QBs need to wait longer to be able to pass. They should probably do away with it altogether, and just have separate composure ratings in different categories to better differentiate the stars from the duds. I'm not totally against the delayed acquisition approach to AWR, but it definitely can't be anywhere near 3secs.
I'm not crazy about the way that you use the RS to select receivers with every direction mapped to a receiver. Reason being, is because that makes it similar to what we have now, or the VC, or the DT idea, in that you can always directly select the receiver that you want. It totally defeats the purpose of having only one pass button if there is a direction for every receiver. You might as well just have 5 pass buttons then.
The other thing is that it makes it way too easy to look off, just like DT or VC. You could just leave the QB looking at any old receiver and scan the field with your own eyes (provided this is in a skycam) and then quickly select the one you do want to throw to and then throw. Again, using these types of methods eliminates any reading or going through progressions in game and makes the passing less realistic and more of the same. I know you have that 3sec wait stipulation, but I'm not counting that, because that isn't acceptable lol.
I think that in order to have actual reading take place in the game, the RS needs to be used to cycle left/right to select a target. You should be able to cycle as fast as you can flick the stick. This mimics looking at receivers, allows you to look off, but provides a slight penalty for using a receiver on the opposite side of the field as a decoy. As soon as you have a direct access method of selecting a receiver, whether that is buttons for every receiver, double tap, or Vision Cone (except when using the RS which is how it should be played IMO lol) and have a skycam view, as a consequence, you eliminate the need to make any reads or progressions, in game. If that isn't a deal breaker, then that's fine, but for anyone that is proposing an idea for making reads in the game, if your idea is along the lines of the examples I just mentioned, just know that you haven't accomplished your goal.
Some interesting ideas here though, and I'm glad to see your A level stuff

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