I love football season as much as anyone else, but it really bums me out when the super bowl ends and there is no more football for 6 long months, so I have always had this idea and would like to see what you think (I know it would never happen)
keep the college football season the way it is now, from late august-early January..
push the start of the regular season for football from early september, to mid October, keep the season 16 games but add 2 byes instead of 1. This way the season runs from mid October all the way until the Super Bowl in mid March. Keep the draft the same time it is now and push free agency back one month to early April. Mini camps and training camps just get pushed back one month.
This way, I get football from late August (because of college) until Mid March, it is an extra month and half of football and it would keep players healthier and at the top of their game with that extra bye week. Not to mention pro football is meant to be played during the fall and winter rather than late summer baseball weather to start the first month of the season as it is now..