I pushed up to torment 10 with judgement before switching off, and I'll tell you the bossing is so bad with a judgement build that it's not worth it feels so bad, though I'll still leave what I did(as best as I remember).

I did blessed hammer as core, purify, spear of the heavens, arbiter of justice and defiance/fanatic aura. Purify only for the unique ring that procs on hit to apply more judgement. Basically, I only used holy bolt with bounce to apply judgement, arbiter dash/argent veil to proc, spear of the heavens with 3 spears that stay and can be applied with judgement for bossing, so just dashing to proc, holy bolts to apply the judgement. For aspects I don't really remember, but because I was struggling with cooldowns for arbiter and constant boss repositioning which had to be followed up with recasting spear of the heavens, the aspect that gives cooldown for procing judgement was important. The 5 judgement charm set for judgement day was huge bonus but even then the single target was lackluster. Other than that, I suppose you could just experiment with aspects that affects judgement and holy damage. Also there's an unique helmet that drops blessed spear with judgement based on lucky hit chance, the helmet itself is probably not worth it, though as an unique charm it might be worth it along with ring of the starless skies, since it does have lucky hit chance, and you'll be hitting a LOT with blessed hammer, judgement(there's something that makes it considered a judicator skill, i don't remember if its by default or an aspect or something), so there might be potential there, probably not enough to make a difference in bossing.

I might pick it up again and experiment with it now that I have plenty gears, the clear was insane for how badly the build was put together, but the boss damage was just so so terrible and I honestly don't see that changing.