Herald of Ice

I want to equip herald of ice on almost every build of mine that shatters, but its hard to justify it from a minmaxing perspective. It generally adds a minor amount of flat damage to your build but the explosions are just incredibly weak in endgame content.

Can we get herald of ice to do a % health based explosion instead so that it can keep up with the content you're doing?

Another potential option is to maybe make herald of ice apply covered in frost to targets it hits.

I think most people would love to have a good reason to put on some cool herald explosion mtx.