Mahomes has lots of time to figure out his post-career endeavors. In the meantime, there’s plenty left to do, plenty left to accomplish. Great quarterbacks are playing into their 40s now, so he has a decade-plus to build the type of football legacy he has had on his mind, even before the recent airing of ESPN’s smash documentary “The Last Dance” — on Jordan’s epic career with the Bulls — potentially provided a blueprint.