I think standard dwarf lord will still have a place. Especially some of the defensive kits can make him really a pain in the ass to kill.
Slayer lords are really nasty. I wouldn't want my character anywhere near them. I don't think a magic weapon does much for them, rather just go great weapon. Deathblow is so op!
Runelords...Mehhhh rather have cheaper runesmith spam for channels

Thanes, not bad and LD10 is op.
runesmiths, I wish they were cheaper. I would probably take at least 4 since spellbreaking doubles just turn into spelleaters and need to channel.
slayer heros are decent, rather have the lord though. Deathblow is so op!
engineers straight nasty and at least 1 is req imo.

warriors: 10 points with GW is not bad.
quarrelers: 14 points with gw and can shoot might be better if you need the shooting.
thunderers: obsolete
longbeards: Ws and S for a hefty price.

hammerers: Only heavy armor, but str7 A2 on the charge is no joke.
ironbreakers: 5+ parry and str5 on the charge is nice
slayers: a little hefty at 12 a piece, but deathblow and the slayer characters are really good. I will definitely want to field some and will need a place for my dragon slayer to hide.
miners: a little pricey since you have to take 10min size unit for what they do. I rather have a gyro.

boltthrowers: better than they were, boltthrowers just don't do much in 8th...
grudgethrower: only s4 template now but still worth probably
cannon: went up but still broken
gyro:80 points of amazing imo, craps on units with s3 templates 24/7 can have 6 of them

rangers: scout with every weapon you can imagine. I would go these guys before miners.
irondrakes: nasty but pricey
gyrobombers: rather have gyrocopter for the points
organ gun: it cost 200 points runed/engineered up but it deletes units.
flamecannon: not as accurate as a cannon, could be nice vs beast of nurgle.