Thanks for the comments Tim/Steve and olderplayer.Ditto on plaguebearers, they went from excellent tar pit to overpriced unit with the restriction that they either get regen or ward save.
Did a test of 37 bloodletters vs. 50 high elf spearmen of approximately same points. Bloodletters win just a bit more but are made a lot better by herald of khorne in unit. Get the bloodletters into combat fast to reduce shooting and magic casualties and they will do fine in 8th ed. Demonettes may prove to be very good with the ASF, high I and daemon ward save and improved by 8th ed.
Are you over the 25% rare limit? Beasts of Nurgle and Fiends also get stomp. A unit of 3 fiends is an interesting alternative to the overdone bloodcrushers. Also, fleshhounds are still very good with the MR adding to their ward save when magic is cast at them.
My understanding is that characters only get Look Out Sir? when in or near units of same troop type.
I'd look at the Lord of Change to exploit some of those Life and other excellent common lores and give you a lvl 4 caster and the consider switching the heralds of tz out.
BT is harder to hit and will be hit more often by cannons and stone throwers but stone throwed might do less damage unless a direct hit but there is no longer a BS bonus for shooting at a large target, so bolts are a bit less threatening.
Hitting flanks and rear is the key. You won't break ranks if you don't have two ranks but you will get the CR bonus and supporting and spear attacks can only be directed to the front, so a fleshhound unit hitting the flank or rear can do a lot of damage.
I'd drop the pyrocasters, not worth the extra points.
Definitely will take some of those things into consideration. I really do like the KoS but I have a very nice FW Khorne DP that doesn't see enough light. This way it will; I still think the Bloodthirster is a honest choice. If you can manage to get that LoL spell off which boosts T by 2/4 he becomes nigh untouchable with even warmachines needing 6's to wound. I think he can still go through blocks of infantry relatively quickly. 7 attacks with rerolls to hit followed by d6 autohits should reasonable take out a decent chunk of models. Just gotta make sure you get something into the flank pretty quick.
I am over on my rares, doh. I'll drop the second squad of flamers and the pyrocasters. I think I'm going to throw in a unit of Khorne hounds to follow the thirster around. What size should I look at? multiple ranks?
I already have the bloodletters so I'm not changing to deamonettes - I think they are both about equal anyways. Plus I have my heralds on bloodletters to up the killing power.