Add defensive layers against spells for minions

I like the changes GGG made to minions in previous updates, but it's actually really hard to find ways to get minion defenses (especially against spells) without losing damage. Currently, the only way to get spell defense for minions is by using Bone Offering but not reaching 75%, so you need to use some passives or items to have more spell block. Taking into account that in the current state of the game there are builds of minions that are hybrids (armor and evasion) that instead of going for blocking they go for spell suppression for defense against spells, I suggest some possible changes:

-Add a spell suppression mastery: minions chance to suppress spell damage is equal to yours (similar to precision mastery for minions).

-Add a new cluster passive skills for spell suppression for minions "close" to the witch start point.

-Minions gain x% of your spell suppresion chance, minions prevent 3% of suppressed spell damage (unique jewel, unique ring or unique amulet).

yeah the options are pretty much zilch, hard to do super late game content.