I too agree it shouldn't be released at least before Illidan dies (along with T5 if things would go as it did with T4 in the store). The issue here though is that it's been promised to be released and some people (not me luckily) have already got their coins ready through different means. Fixing the drops would be a welcome addition though (2 random epics | Source: https://youtu.be/Rg4x9CRk4TA?t=393). Also as a related matter, note how Kungen takes around 6500-7000 dmg at 12 Stacks while our tanks take about 12k per hit. :)
https://youtu.be/U2CvVWuiNQE?t=461
https://youtu.be/MnyHbTZlOWo?t=401
2 more videos showing 2 random epics should drop and not one (Not sure whats up with 1 tier token dropping for Nihilum).