Two Nightblade abilities need to be double checked.
The Shadow Barrier passive (Shadow Tree) says that it grants an armor buff any time a Shadow ability is used that lasts for 11 seconds (with two skill points used)and is increased my 175% when wearing 7 pieces of heavy armor. So, multiply 11 seconds by 1.75 equals 19.25 seconds. This is how long it should last but it does not, it only lasts the 11 seconds no matter what. The time needs to be increased as advertised in the tooltip.
Refreshing Path (morph of Path of Darkness) which grants a healing tick every .5 seconds to allies in the area does not show any increase in any of its ranks of I to IV. The damage done does not change and the healing per .5 seconds does not change from each rank increase. I would expect the damage to not change since the other morph (Twisting Path) is the one that increases damage done so the logical thing is that the ranks should increase the healing amount per tick.
"When in doubt, kill it with fire."