It's my first time theorycrafting a build for my favorite skill, and I feel like I might've made a lot of mistakes. Would love some opinions!

https://pobb.in/ojA_XLE2yKEv - Current Theorycraft

So just to kinda give an explanation, my favorite skill is Ice Crash and I wanted to create a version of it that I can not only play in HCSSF but also for regular League starts to scale it.

I ran a couple other versions of Ice Crash in multiple game modes and found that it runs into a couple issues:

1. Lack of reliable Stun Immunity leads to dying on juiced maps and sometimes even just regular 3 - 4 mod T16s (RIP my HC Ice Crash slammer)

2. Ice Crash scales with Crit/Crit Multi more than anything else and I haven't been able to find the right weapon and tree pathing to figure this one out.

3. Defensive layers are missing since it requires both Crit + Ele/Phys to shine and that distracts from defensive nodes.

This gave me the idea to run as a Jugg.

As a Jugg, this solves my stun issue along with giving me endurance charges as well as being able to stack tons of armor/life/2h Phys from the Marauder side of the tree.

I discovered Staff lets me get tons of Crit Chance/Multi along with Spell/Attack block all in one, so I pathed up to the left of the tree to take advantage of those nodes.

I also double dipped into accuracy nodes, rage nodes as well as mana res to make room for all the war crys on autoexertion.

Now for the part where I'm kinda lost at:

This as it stands is just a PoB Warrior set up, I have yet to test it in game and I believe I've already made a lot of mistakes that my noob brain can't really process.

I'd like to know where I can improve on in this tree.

I think gear wise, a lot of it is unrealistic rare gear as well with perfect rolls which I obviously won't be able to get normally unless I get very lucky and I haven't considered any uniques either into the equation which might help a lot.

But I guess before I even look at gear I just want to make sure the tree and my thought process works.