The NFL itself has been headed in this direction anyway with anything more than a nudge of a quarterback now a penalty so this is hardly a shocker:
nfltraderumors.co

Roger Goodell Reveals Plan To Create Professional Flag Football Leagues
During Super Bowl week media, NFL Commissioner Roger Goodell revealed the league's desire to turn flag football into a professional sport. Per Michael David Smith of Pro Football Talk, Goodell spoke on the possibility of