Exactly. I don't know why an umpire would chose to warn only and why another would be ok with taking point penalties. My guess is, all the umpires would have to get together and make a pact to be consistent. There are probably numerous other players besides the ones we see on TV who take too much time. In order to be fair, every one of them would have to start getting dinged. It's probably not going to happen, so the officials will probably continue doing what they are doing, with their 'gentle little nudges and warnings.' As far as I know, Hantuchova is the only one who's ever gotten a point taken from her. It didn't stop her from her routine.
I quote u either bcz glenn and you made a good point IMO or bcz this silly idea just came across my mind.
In order to enforce the rule, the umpire before the beginning of the match will allow players not only to warm up, but also practice all the rules about time usage/wasted we are talking about this entire 24 hours... the umpire counts it and tell each player his... by doing so he gives an advice and precaution. players will adjust his time usage between points/set and get finalized whenever they break or at least rite after the first one....