@mekkaokereke @evan As an admin, I've found myself wanting the same thing, and the closest we have is going around to other instances and looking at what instances they block/silence.
It's inconvenient, of course. But the much bigger problem is that most of the longer lists are full of "we block this instance because too many people don't put '''politics''' behind CWs"—which is absolutely not a reason we want propagated to widespread blocking.