[dfwgator]

I like it the way it is, because the players can’t make any assumptions as to when exactly time will be up.

[gusty]

Exactly. You play hard until you hear the two whistles.

[Steve_Seattle]

"I like it the way it is, because the players can’t make any assumptions as to when exactly time will be up."

So you wouldn't mind watching a football game - your team ahead at the end of regulation play - and the ref saying, "OK, I've added two [three, four, five] minutes to the game," without your knowing how the ref determined that?

[melsec]

In my way though it would not be shown to them on a scoreboard etc just down to an official timekeeper!