User blog comment:Emptylord/Champion reworks/Sona the Maven of the Strings (Overwatch's Lúcio)/@comment-26378838-20160620133459/@comment-3974211-20160620183211

Hel's abilities are fairly flat/simplistic, compounded with the fact Smite is an FPS - meaning abilities have to be more simplistic due to the control system. There's also the fact I personally dislike shapeshifters that sacrifice their ultimate for a toggle button - they've historically been unsuccessful, hard to balance and their gameflow doesn't have the same enjoyment (Karma, Jayce, Nidalee, Elise, Heimerdinger, Quinn to an extent, etc).

Rek'Sai's basic-ability-shift has been more successful, but has still be hard to balance - but champions like Gnar and Shyvana have definitely been the most successful implementations.

I'd rather explore versions of Duality that do not sacrifice an ultimate.