Frost got buffed to all hell too. Snow Globe has infinite duration, Avalanche removes armor, he got plenty of extra armor, etc. And yeah, Ember is the best speed-run frame in the game for lower level missions now and holds up surprisingly well even in very high levels (100+) as a CC/damage amalgamation with Firequake and/or Fireball Frenzy (ability augment mods, new thing that gives abilities some extra effects) + Accelerant.

Saryn got reworked and is a bit weird now but she still does good damage with Spores + Gas/Toxin procs. Gone are the days of Miasma nuking everything in the world though. Also, Ash got indirectly buffed a ton by some mods that really enhance Bladestorm (you can hold a melee weapon to get Body Count benefits [mod that makes combo counter last longer] and attack speed [speeds up finisher animation nowadays] while casting it).