Yes; make the switch, but...
Add a "turn clock" for a real full 10 seconds after a takedown is scored. The clock would reset when exposure points are awarded. The time after takedown is too subjective for me right now, and a "turn clock", if you will, nearly takes the ref out of that decision.
I wouldn't mind overtime coming back, but I do understand the rule as it exists and how it promotes action.
Do a little more tightening up on who is initiating the action and thus who is awarded points.
Address grounding as negative wrestling and have it scored as a caution and one each time OR have the offending wrestler receive a caution and be placed on the activity clock.
A move to adopting Freestyle at the youth, high school and college ranks would make college tournaments more exciting with post-grads coming back to compete domestically.
More international kids might take a chance on coming to the U.S. to earn a degree and wrestle for your favorite team.
In reality, nothing for the sport (except the rules) would change significantly except creating more competitiveness and depth at each level.