I'm not opposed to swapping the engine gauges to the PF side if that is what people want. But I'm also not really an N1 reference person. We fly a ton of variants, with greatly differing gross weights. It probably isn't that much mental real estate to memorize a target N1 for each variant at typical landing weight, but I guess I'm just not super great at number remembering like that, nor do I think it really matters. I also come from a place where we don't do any of that, to include computing approach speed (other than trimming on-speed AoA), simply because there are a ton of variables. Tailwind vs headwind dramatically effects your VSI for a 3.0 glideslope for example. We also have very large variations in gross weight at landing that are not entirely predicable, not to mention external configurations that fly differently, hence I think, the lack of what others might perceive as discipline and book knowledge. Gusts are pretty normal at my pilot base/domicile/anywhere north of here, and require some reactive throttle movement outside the range you mention, even outside of true wind shear conditions. I guess that is all to say that my spidey sense for this starts going off anytime I need to make larger throttle movements without having made a corresponding major change in pitch attitude/anything else. Don't really need to reference the N1 gauge for that. Just what my hand is having to do to keep the speed tape in the right place. I'm probably overly simplistic, and maybe even exhibiting bad habits. But that is my take, which at maybe a few hundred hours in type, is super valuable I'm sure