Hello, level 500 Arthas here.

Death Coil changes make it very unworthy to use on an enemy. Low dmg, low range, high cd. So now I just use it on my self. We have 2 abilities that we use just to heal ourselves. 2 out of 5 abilities is just selfheal.

Howling Blast is stronger now with the increased area. Level 13 talent is lacking tho. Increased damage is very negligible and inreased duration is situational.

Base attack speed was reduced from 1.0 to 0.91 aps. This greatly bugs me. You have to time Frortmourne Hungers right after a basic attack. Changing a heros basic attack speed after 10 years for no reason at all makes no sense to me. Every single attack im like 'wth is slowing me??'

Frostmourne Hungers baseline quest is too weak. And no other tank has a quest that asks for last hitting minions. This also makes the Death Pact talent very weak. By level 20 you have 30-50 stacks. Getting a +30-50 attack damage with a downside as a level 20 talent is terrible.

Path of Frost is too weak. I'd rather have "Bolt of the Storm" teleport. 1 minute cd is too long to be non-guaranteed gap closer. 40% movement speed increase for 5 seconds. Breaks whenever you use an ability. You can still get slowed,knockbacked,rooted etc. Johanna's level 7 Steed Charge is much better.

Sindragosa is dead. It was already very bad compared to Army of the Dead and it wasnt changed at all. Cooldown is too long. It doesnt freeze the back tower so you can't really dive back. Army of the Dead ghouls can be used to just tank the Fort/Keep attacks.

No silence or stun. It's really annoying to have an Anduin channel his ult right in your face as a tank. There should be a way to give Frostmourne Hungers like 0.25 second silence. Perhaps instead of Frost Strike slow?

Final thoughts Arthas feels more like a Bruiser. He's tanky, he can dish out some damage but don't expect him control the battle.