No more ambush, new rule forces teams to let the other team know they are doing an onside kick

My only problem with this proposal is that if the kickoff team doesn't get that running start, it'll make it much easier for the return team to pick up all of their blocks, leading to an abundance of successful returns.

I guess that's a pro and a con, depending on how you want to look at it, but basically, my fear is that this MAY backfire and make returns a little easier than they're envisioning.

I do like that this makes successful onside kicks possible again though. The game has lost something by making this "difficult but doable" desperation play pretty much impossible to pull off.