Kickoffs are a throwback to a time (the 1800's) before the forward pass, when football was more like rugby. If you look at rugby, Australian football, and all the cousins of our own football, punting and kicking have a lot more meaning to the game.
In our football, the kickoff and punt are just weird. We have specialists, punters and kickers, whose only job is to punt and kick. In rugby, it's just part of the game and everyone does it. That's why the australian punters are so good.
I think American football should emphasize special teams more. Kickoffs should be a bigger part of the game. For example, I would move the kickoff point back, not forward, so that fewer kicks go in the end zone. And I would say any touchback.... you don't get the ball at the 20 or 25 yard line, you get it at the GOAL LINE. If you do a touchback, you have to drive the entire length. That would make teams return the ball more often for sure.
Kickoffs are fun, when the league isn't trying to neuter them. Watching someone house a KR is one of the funnest things in football. Too bad the NCAA and NFL are trying to take that away IMO.