Map Hack changes feel much better now. It doesn't have as much practical, usable uptime because of the fade before each new ping. This is ultimately a Very Good Thing, in my opinion. On the receiving end of it, I think the UI message stayed up constantly before the change (IIRC), but to have it flash (with each new ping?) is a great reminder now since it's renewed on-screen every second or so. I might be crazy, but has the opacity of the highlight also been toned down a bit, too? Hard to tell since I've not played MP in nearly a week, before tonight.
Thanks to the folks that made that happen really quickly. From my session tonight it seems less people are using it now, so I'd consider that to be a successful balancing change.