Optimal daily intake of all essential amino acids is easy to achieve with any sensible dietary habit, even for very active adults. If you're consuming adequate protein each day, given your activity level and health, then the amino profile of your protein intake is completely irrelevant unless your diet is really goofy.
I'd encourage you to read that Forks over Knives article.
There is compelling evidence supporting supplementation of some conditionally essential amino acids such as carnosine (perhaps vis-a-vis beta-alanine) and glutamine. There's also increasing interest in restriction of specific amino acids, namely methionine, for anti-aging and cancer treatment.
But all this talk of supplementation and restriction, outside of what occurs naturally in foods, stands in opposition to the dietary notion of protein completeness. My hope is that it will eventually lead to more appropriate and flexible measures of dietary protein quality.