Can vouch for levelling Blade Arc as well, mainly 2-handed. Korvan Celestial Halberd is bonkers strong for Physical Death Knight. Outside of Physical, I’ve even levelled fine with it just picking up a relevant 2-handed pure damage MI with affixes for Physical conversion and attack speed e.g. Decaying Spectral Warmaul of Alacrity for Vitality.
1-handed might be more problematic with the low base weapon damage so it’s harder to scale up with weapon damage but i wonder if this could be circumvented by hardcapping Laceration and pushing Physical damage to Blade Arc mods instead, 1-handed means with typically more attack speed that you apply this damage at a faster rate than 2-handed. E.g. https://www.grimtools.com/calc/pZrBYxOZ. Would need to be tested .
Also agree that Cadence levelling by itself is god awful and I never want to go through that hell again . But it seems a little better with either Aetherwarped Cleaver or Voldrak’s Crusher and 12/12 Fighting Form for a bit of crowd clear. Ulvar1 posted Voldrak Warder levelling so it can’t be entirely bad right?