3) Why aren't monster affix combinations restricted in some way?
Monster affixes are actually grouped into categories and then restricted based on those categories (to a degree). Our restrictions aren't as tight as some players have suggested, but in the end we found that adding extra limitations often made Elite pack encounters very predictable and repetitive, which kind of went against our design goal for these types of monsters.
We know that not all players will see eye-to-eye with us on how these categories are organized, and we expect some criticism and disagreement, especially from such a passionate group of gamers. While we're happy with where affix combos are right now, we're open to feedback and especially constructive discussion.
Here are the categories:
"Strong CC" (Limit 1):
Knockback
Nightmarish
Vortex
"Defensive" (Limit 1):
Avenger
Extra Health
Health Link
Horde
Illusionist
Missile Dampening
Invulnerable Minions
Shielding
Vampiric
"Aggressive" (No Limit):
ArcaneEnchanted
Desecrator
Electrified
Fast
Fire Chains
Frozen
Jailer
Molten
Mortar
Plagued
Reflects Damage
Teleporter
Waller