From the picture, I would have guessed young Indiana Jones

https://youtu.be/QWvMK5j-fXU

It's been done before, back in 1985.

What I'd like to see is young John Watson as the hero, and Sherlock as a sniveling sidekick.

Watson was slowed down by his war wounds, but Holmes himself noted that Watson had a way with the ladies. Young John was probably quite the athlete and clever enough to get through medical school.

Meanwhile, Sherlock was probably overawed by Mycroft and was probably bullied.