All that makes sense. As far as I can tell I'm already rocking the 5 stacks, and killed all the elites in the pack, but as for falling off the map, I guess I wouldn't be able to tell. I'll keep an extra eye on it from now on. I mentioned it because in the hundreds of hours I've played it appears to be a new phenomenon. Thanks for the input, ya'll.
Any rare loot. This has been happening much more in the last 2 days. It was my understanding that they would at least drop one, and that's certainly been my experience. Is this a bug or just really terrible RNG? Thanks.