Not bad idea, but mode could create a sticked post on meta to claim ban, hacked and locked account. Especially ban and lock possible solve and answer by mod.
I have created a thread about it; https://bitcointalk.org/index.php?topic=4924964.msg44361091#msg44361091
Although it's temp solutions but it might be reduced lots of post. On the other hand it's seems others user also helping ban user why they got ban. I think hilariousetc can do it since he is helping most of ban thread.