The warning shot rule is such a critical rule that affects the whole gameplay of jb. From my personal point of view as a CT, it's really frustrating and tiring having to repeat commands over and over again. However we must understand that it's extremely essential as players who haven't heard the command properly or the CTs mic lagged while talking. Even when there are stupid kids, people who can't speak English properly or newbies, it is totally unneeded to kill them just because they ain't doing your command. Personally, most Ts might call me "T Friendly" however when some of them gets cocky I start going like a meany spider. Don't forget the fact that killing them immeaditly would sometimes lead to what I call "player loss"- mostly applied to new comers.
I also wanted to express and agree with numi that admins do complain alot and take stupid actions towards the CTS. However, there are some or alot of what I call bossy CTS who loves to rank in which this rules applies critically. In other words, having this rule is a must, but some elements are subjected to be changed.
Since this topic talks about the rules, I wanted to point out that a rule that says "The T who's inside an unreachable vent will have 30 secs to come out after 0.00 otherwise he will get slayed". This is because there are some idiots who delay the game by going into a locked vent for the entire round. For instance, today at a map called movieclick where a player called Burn Killer kept camping for about 20 mins (till we killed him). This was very boring and a complete waste of time. A lot will agree with me about this hoping kids like Burn will be dealt with.