Brainstorming ideas based off what we know.
- armywide 5+ ignore pain(ala necrons). this may be a ward or built in resurrect/resummon or even both. With supporting modifiers in items and characters. They have to be just as tough as nighthaunt if they want to be the elite of undead.
- ignore battleshock. Elite troops. plus the fact they will be very expensive troops so unlikely to need to take many if at all.
Mortek guard. Gotta be expensive and tough compared to GG. Im thinking there is going to be a lot of sequitor fighting styles in this army because they have multiple personalities/owners. They may even rock 2w and be very expensive. The biggest question mark is their movement. Skeletons rock a disastrous mv4. not sure if these guys will follow suite. 3+/4+/-1/3a.
Deathriders. I honestly cannot see these guys better than bloodknights. Vampire > construct. Knights for the most part are not statistically good in AoS unfortunately.
Bonereapers. Probably take an ogre, make it better, tougher, add the army rules. then add 3 abilities that can be switched on or off. im expecting 3+, 4+ 3a. -1, 2d and stances like +1a, -1 to be hit, reroll armor saves, reroll hits and wounds
Morghasts. Im expecting a point drop to around 80
Crawler. this is huge. Im expecting this to be like 36" range. D6mw + X per 10 models. They specifically stated it destroys fortifications. So might have an effect on custom scenery.
katakros- im expecting the Morathi x damager per turn cap rule. I also expect some amazing CA and CP generation. Wouldnt surprise me if he got a bonus to turn order.