Playing styles that age gracefully?

Odd question for the forum. As we get older, our reaction speeds take a bit of a hit. My guess is that the ability to pull off impressive AOE 2 micro (and related skills) also declines with age.

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Based upon the current meta, how would you build a playing style that's as resilient against the effects of aging as possible?

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(Or to put it another way: Imagine you're training grandma. Once she masters the fundamentals of the game, how would you shape her playing style to be most competitive against younger players?)