AA = anti-aircraft? or AA = auto-attack? Which one you mean makes a big difference.
Anti-air toggle is a small (but important) change that will only affect a few units and won't increase micro by a significant amount.
Auto-attack toggle is a big change, affecting many units (mortars, light arty, anti-air units) and significantly increasing micro.
A little clarification is needed, especially when using abbreviations. [Proof-readers rule-of-thumb is to always spell it out exactly the first time then, use abbreviations subsequently.]
Going by the context of the main post I can deduct using my detective skills that he is indeed talking about the Anti-Aircraft mode and not Auto-attack.
As far as QOL changes goes, I agree with the OP.
I believe there was already a mod that actually did that but I forgot which one exactly.
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cblanco ★ 
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VonManteuffel 
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