I feel Like the ranged problem is an AOS problem in general. Its power needs to be reigned in but I don't think it should exclude us form having them. Old fantasy negatives to hit need to be reintroduce, no more shooting in melee etc would help a lot to tone down their power as well as some rebalance to key offenders. I feel like Katakros would not be stubborn enough to not see the usefulness of chariots and feel that he (although not ride in one etc) could have them in his army. Especially if nagash was kind of telling him to do so. Otherwise I agree with your points. I actually feel like reinforce battle shields should just be a 5+ negation agains regular AND mortal wounds but that could make it a bit too strong on a big mortek blob. I do feel we could use other battle lines. I want our bigger constructs to be able to be conditional battle line but 2 wound beefy infantry would also be very accepted.
I feel one or two infantry, chariots and one or two bigger/medium constructs would round us out quite well. Say archer, halberd/greatsword unit, chariot, big necro sphinx/warsphinx esque construct and 2 wound greataxe style unit (though the 2 wound could easily tread on our 4 wound models' identity).
Also GW make morghasts better please. Give them warscroll RDP ability and just buff them in general. By the size of them I could see them at 8 wounds easily.