[Item] Set Effects

Some Set Effects that would utilize underused effects by giving them large coefficients:

For example, swap (or add to) Bul-Kathos's set with

(2) Chance to deal 150% Splash Damage on hit.

Or on the new Thorns set, also throw in

(3) Gain 10% of your Thorns damage as armor.

Or have some (new?) sets geared towards specific elements

(4) Whenever you are dealt Fire damage, you explode in a burst of flame for 300% of your Fire resistance to all enemies within 12 yards. 

(4) Whenever you are dealt Cold damage, you gain a covering of ice that increases your armor equal to 300% of your Cold Resistance for 10 seconds. 

(4) Whenever you are dealt Lightning damage, shoot out bolts of electricity for 300% of your Lightning resistance to all enemies within 12 yards. 

(4) Whenever you are dealt Holy damage, you gain immunity to all damage for 1 second. This effect cannot occur twice in succession within 5 seconds. 

(4) Whenever you are dealt Arcane damage, gain Arcane Power equal to 10% of your Arcane resistance. 

etc

Would be awesome to see some commonly-overlooked affixes be used in unique new ways, as well.

(2) Critical hits have a 20% chance to spawn a health globe.

(3) Health globes explode for 500% of your Health Globe Healing to all enemies within 12 yards. Health globes no longer heal you.

or for a time wizard wand/focus (with, of course, cooldown reduction to Slow Time on one of them),

(2) Enemies caught within a Slow Time bubble take 300% of your Life Per Second as Arcane damage every second.