To reply your problem on Dreadnaught vs. Fatesinger, I am supplementing the build build with Dreadnaught simply because for a single - I'm using the Shadowdancer epic strike. This strike is woven into the build as it truly is AoE, applies a debuff, promotions power damage, and most importantly: procs https://triton-paladin48157.tribunablog.com/nimble-escape-5e-options-42062927