If you "Select right engines", you'll be selecting 3 and 4, not just 3 as I did in my example. And if you select left engines, you'll be getting both 1 and 2, not just 2 as I did.
Sure, why should I select a single engine when both engines are just as easy to select and give me more thrust?
Plus, you always have to remember to deselect all engines after a throttle manouevre so that you don't accidentally move the wrong throttle next time you try to do something.
I hadn't even assigned a key to that function until I did some tests recently. I never needed to deselect an engine. All you need is "select all engines" as selecting one engine automatically deselects all others. All that deselecting in your example is useless.
And even if we take your simplified example, you're still doing 4 manouvres to my one.
Come on, 4 manoeuvres... I hit one key and move the throttle simultaneously, then hit another key and move the throttle simultaneously. That's two actions if your moving two throttles simultaneously is one action. Takes me two seconds to do. Not worth all the talking.
[quote]but at least I know not to waste