Just curious, but how big is the list of armies with no access to any of; tar pits, mortal spam, shooting, or high rend? This can’t be a large list surely?
Kragnos’ biggest issue is that he basically is an OTT version of what destruction already does well. Whereas other centrepieces like Naggy/Archaon/Kroak etc bring things to their faction which the rest of the army doesn’t have.
Kragnos is, ultimately, a suped up FLoSH/Cabbage. He isn’t shoring up a weakness. He’s piling onto an area of strength.