Haven't bothered and don't have much interest. The affix for it seems good though.
Playing other games at the moment, and also, I did thousands of those dungeons during Legion so wanting to relearn them again for a limited event just doesn't seem like my cup of tea.
It's unfortunate because it's a lot of work put into an event that's only going to appear a few times a year. Luckily people get a month out of the first incarnation.