Effect "Enthralled" is applied on successful charm. This simply makes mob some kind of your friend.
But what if Enthralled also would reduce "friendly fire"?
Like about -50% at least.

This will not only decrease chance of some genius friend mob from killing the caster by friendly fire, but it could even be some kind of additional weakness debuff, if successfully applied on player.

P.S.
It would be even more delightful if Summoned creatures, especially archer skeletons, would spawn with lower friendly fire too
But I don't know, at this point there's some sort of... "trying to see logic here".