A good way to strengthen your argument/suggestion is to provide recent examples that support it.
I don't know how other servers do it but I fire people who are troublemakers. If the server you login to doesn't write an email to the PWA. There's no point implementing something that a Manager/Admin should be making sure doesn't happen in the first place.
It's also important to note that due to Graal having such a small community, everyone knows everyone and doing a background/idiot check is simple as asking your fellow staff on RC.