The way I read this, I don't expect much of a difference. An endzone kick puts it on the 30 instead of the 25 - BFD there. Most of the kicks will look like kickoffs with the old rule. The only difference is the D goes from a standing start 25 yards closer than before with a running start. I'm not a big fan of safety crap, but it seems like they've achieved it here without substantially changing the end result or the way the kick return is gonna look.

It didn't say above whether the two returning team players in the 20-30 yardline area can't move. Assuming they can, you've got Keisan and basically three lead blockers to blast a hole in a fairly thin line of defenders since the kicking team will be spread across the whole field and not able to converge until the ball is caught. We might see some big returns. We might also see some teams use RB1s returning kicks.