I'll break these down 1 by 1

1. This would be better suited to the original dark side rather than bringing up a new animation as delirium. That said the concept is completely sound
2. Salted earth is probably not the best for this as its ground placement. However if Scourge was broguht back, that would fill the niche quite well
3. I think these mp restores will need a boost considering no inner release spam. In addition, quietus needs a serious damage buff, it just tickles.
4. no thank you, I'd rather have my duration max and also have its timer fixed. I also think it needs its attack range upped because moving bosses it struggles with
5. i think the healing received is a bit weak. The drk must be able to recover from his own invul like the other tanks.
6. TBN is rightfully earned at 70, its a shield made out of love. That being the case Rampart should be replaced by shadowskin. This was a completely unneccesary change SE did in shb.

We desperately need more combos. A branching combo system like we had in HW would go a looooong way to alleviating the boredom in the job