Your assumptions of omniscience are over the top, but I feel that their very lax RoE is what is at the root of the casualty count and feel that a more disciplined RoE would result in a lower body count. This was discussed in detail a couple of years ago in the JB Gaza thread (one of them) before as usual they got shut down. Not gonna rehash that here. (And no, they do not have triple canopy jungle as an explanation for "no, I didn't see them before the bomb hit, why do you ask?").
Between drones and a lot of way better ISR assets in the modern age, target identification isn't as hard as it used to be, nor is identification of non targets as hard as it used to be.