Could a 4-point shot be in the NBA's future?

SALT LAKE CITY — As much as the NBA rules have changed over the years, is there anything new that might be on the horizon?Here are a few possible ideas for changes to the league:4-point lineWith 3-pointers becoming more common by the season, going from 13 per game just 20 years ago to 31 per game this year, it's not implausible the league could employ a 4-point shot in the future. You could make an arc halfway between the current line and halfcourt — about 33 feet — or make it