Spell echo vs aftershock - ridiculous disparity

Comparing spell echo support to aftershock support - one gets 100% chance of extra repeat at the expense of some extra cost & reduced cast speed, meanwhile the other gets a measly 25% chance to create aftershock?!

Yeah maybe you can get close to 100% chance from aftershock support + tremors + titan ascendancy + nodes on tree - but the opportunity cost for this vs throwing on a single support for spells is just absurd.

Again shows how bad maces are compared to other archetypes.