OK, I've play all of 2 years of organized ball, you've reffed for many years. You understand the nuance of officiating, I don't. Check. I am not questioning your authority on the matter of reffing, or understanding defense.
Buttttttt, you don't need to know one whole hell of a lot to see that players are regularly in the fucking key for 4, 5, 6 seconds or more. I don't care whether they're leaving the key or not, they should under no circumstances be in the key for 6 seconds before a shot goes up, and it isn't called.
If you don't like 3.00 seconds, then fine, have the computer call 4.0 seconds, or even 4.5 seconds. But at some point, the nuances don't matter - the refs are just plain screwing up. That is what I, many on this board, and even casual bball fans want to end. A computer could do it.