I have 2 things I'd like to point out, the first is a small thing: The NLR timer is 3 minutes, not 2.
The other thing is your RDM situation explanation: You don't always need proof from the person reporting the issue to warn the other player. It speeds up the process if they have proof. But if you can see in the logs that for an example "Player y got killed by player x using a m9k_glock" then you know that the person was killed, and then you can ask player x why, etc. and then through your own common sense decide if the person should be warned or not.

Though I am still going to +Support you.