Originally Posted by
kyuven
Losses due to not knowing mechanics are annoying, but acceptable.
Losses due to RNG are infuriating.
There are already bosses that have RNG in their attack patterns. Such as t10's final phase. Or Savage t8.
The problem is you need to balance RNG usage with actual skill. If you use RNG for boss mechanics, there will end up being victories due to luck, not actual skill. Employing patterns means that the victories are legitimate. Thus, the RNG is never used more than between a set of mechanics tested to actually be doable. For example, target selection for t10's prey, Scylla's tethers, most of t9's mechanics, etc.