[Feedback] Requesting Multi-Elemental Build Viability

So I started the game off as a Sorcerer and went through the entire campaign and up to WT4 before thinking that the entire game was extremely limiting and garbage. My Sorcerer is now level 63 and I switched over to a Rogue who is currently 93. All of the issues I had with the Sorcerer aren’t present on Rogue. We have Aspects that are based on using multiple imbuements, mobility outside of just Teleport, and while we don’t have Barriers from our kit, we have a decent amount of Damage reduction. That said, the main topic of this post is to ask for some builds that utilize multiple elements.

Examples:
-Aspects-
Elementalist’s Aspect- could be made to where casting a skill of a different element than the previous skill gains a x% increased crit strike chance, as I don’t find myself above 100 mana often.

Three Curses Aspect- could be made to where each elemental status effect applied (Chill/Burning/Stunned) grants a stacking increase to the damage dealt of your spells.

-Skill Tree-
Devastation- the Max Mana increase should be half of what it does. The other half should be what is currently Elemental Dominance.

(Reworked) Elemental Dominance- Dealing damage with a Frost/Pyromancy/Shock skill primes the target for an elemental explosion that triggers 3 seconds later. During this primed period, hitting the target with different elements will add those elements to the explosion, increasing the damage and adding effects. (Essentially, you can turn an enemy into a bomb that detonates with whatever elements you hit them with)

Elemental Attunement- In addition to what it does now, Critical Hits with a Frost/Pyromancy/Shock skill reduces the cooldown of the other skill types by x. (This would not be a Lucky Hit effect, and therefore could have a low value.)

Align the Elements- Combine the current one into Potent Warding.

(Reworked) Align the Elements- Increases the duration by x seconds of Conjuration, Mastery, and Defensive abilities for each element active.