To answer your questions. DH tank is horrible for raid tank progression, but good for M+. Nothing changed there. DH, rogue, and warrior are all still good dps classes.
Armageddon Industries
Adult (ages 25+, 30+ preferred) Heroic AotC guild.
T/Th 11pm-2am EST.
M+ pushing = Sunday 11pm EST.
Destiny 2 raiding = Wed 11pm EST.
We do meta achieves when they are current.
For more info see our current recruitment post.