I don't know that any current or former staff members have mentioned it in just this way, so I'll chunk in my four half-pennies:
When we originally talked about this "warning tracking" tool, I thought it would be most useful for keeping track of the "everyday" warnings that went on, not just the spammers and porn posters and things.
What happens in the staff forum is that you warn a couple of members for fighting or whatever. They cool off. Then a week or so later, one of them baits the other one in another thread, so you have another warning. And the cycle continues. Now, all of this is tracked in the staff forum, but each warning has it's own thread (usually) and then also gets a small posting in a stuck thread at the top that is sort of a "catch-all" warning thread, if that makes sense, so we can track the warnings. The theory was that we'd eventually see a pattern of behavior and lay down more than a warning, if necessary. The problem was that all of these warnings got lost in the shuffle, and you'd soon forget how many times you've had to pull a member off of another member.
This tool is just a way of more efficiently keeping track of those kinds of warnings, in my mind.
Tom (moogybaby), LA, and a few others in this thread know what it's like to keep dogging the staff about someone continuously baiting them in this thread and that thread and having to remind us of how long this has been going on, how many times the other member has already been officially warned (nevermind being warned in private), etc. Well, this is the kind of tool that would make things much simpler for the staff to keep track of that. That's all there is to it. Nothing sinister. Just something to make that part of the record keeping much more efficient.
And the temp ban/auto-ban button was always there, that's nothing new. Rob et al. have already talked about that. This tool doesn't make that part any easier, mechanically. It's always been a pretty simple and quick process to ban people.
W.