It has occurred to me over and over for the last several years that many of the senior engineers at my company would be substantially more productive with some sort of assistance from someone who specializes in having executive function skills. One such person given four or five engineers to manage could do wonders. And they'd also be the best source of feedback for hard-to-measure performance evaluation information like "is this senior engineer actually working on anything most days?" But executive assistants are a privilege reserved for only the people who are at level X and up.