Compared to what? CoE? No, if my understanding of how additive and multiplicative dmg is calculated.
If you have 80 disc, its 8000% dmg, an additional 10 disc will be +1000% dmg, witch would be about a 12-13% dmg increase in total, because it's additive to the previous 8000% dmg you already have. Whereas from my understanding, the 200% from CoE, has its own multiplier, and is an actual 200% increase in dmg for the duration of your chosen elemental skill. (split into 4 "parts/elementals", its still a 50% damage increase.
30 Elite and 20 elemental dmg is good, but most likely you missing out on 6crit/50chd for that. SoJ is really not that great. At least 30% Elite dmg has to be a legendary affix to even start thinking about it.
I tried the built yesterday, not even with Caldesan's, not the right gear, and just with the buff on UE per point of discipline, it's just nuts. You clear screens in T13 as if it were T10 or less........amazing, but the game now it's a bit hilarious.....I don't mind farming at that high level, but there is no challenge at all really in putting up a build and getting to GR90-100 or even higher without pushing too much.
I will play this S12 for sure, but I'm moving to PoE guys.....no need to spend more time in D3, at least for me.
So basicly you change the 6CHC/CHD for +10 disc, elite dmg and elemental dmg, the reason the extra disc works on the rest of the gear for the UE it's becouse is a secondary affix so it won't affect none nof the main stats. It would be one of the best rings in the game if we talk about the Shadow Impale build but it just does't cut it.