Most of the changes are pretty nice. good job. I'd suggest only tiny improvements.

Arne special buff to improve Aqua Jail which adds DR buff is currently weirly done. You do get +20 dr as advertised for 5 secs but this buff doesnt stack with previously cast Teleport +10 dr buff that lasts 10 seconds, it overwrites it. I think you should either make these two buffs stack or at least increase duration on Arnes DR buff by few seconds.

Elementalization (new backwards SA movement) maybe should be I-frame for the first 0,5secs on windup or be at least little faster to start with actual movement.

Preawaken kit reboots seem very lackluster to other clases.

You barely touched problematic parts of preawakening kit besides lowering Magical lighthouse cooldown which was really needed, thank you.

Maybe some work on Absolute: Lighting Storm? Concentrated Magic missile? Multiple magic missile?

Absolute: Lightning sometimes has issues connecting on targets (same as lightning storm).

Absolute: Earthquake should get some boost on damage reduction or at least get a little bit more faster animation?

Earthquake Rabams are both bad and outdated.