Hard to believe there are is technology built to teach the plays as they how they used to draw on the board. Take civil or mechanical engineering classes for example. No one is drawing an engine and circuit diagrams on paper with a highlighter, you have software (CAD/CAM : google them) do that for you. Similarily Nfl coaches are the teachers in the science classes, if players are missing the learning just by watching the video then build software to illustrate step by step implementation of each play with highlighters to elaborate. The first team to adopt/invest in such technology could do wonders.