gar_alex, 1. I’m not sure that it’s right, sometimes the mind comes to mind if you follow links, and a message from another user opens) Yes, and in multimoderation, you have to strain your brain once more, if you have to flood a couple of people among other messages.
2. Is the simplest script that works out the function of finding and replacing text values ​​for the event "changing the user name" in a limited range - is this something difficult to implement?) It is written on the knee in 30 seconds.
In any case, this feature is noticed, does not interfere with life, do something about it or leave it as it is, it's not for me to decide either)