The most significant proposal has been to expand the teams allowed into the playoffs from 12 to 14:
Most recent: ProFootballTalk announces there will most likely be a change coming in 2015 due to ratings of Wild Card games being so high.
Sports Illustrated: NFL reportedly considering expanded playoffs, shortened preseason -2014
Another proposal is to re-seed the playoff format so that the best teams always make it in:
Recently officially changed:
“Second chance” rule in 2013:
If a team wins the coin toss and then kicks a field goal, the other team gets the ball. If the game becomes tied again after that next series, play will continue under the current sudden-death rules.