Remember there's 2 guys: the guy who drinks tea and the guy who coked out. Could be the same guy, just different days.
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When the battletomes dropped and i saw Changehost, I could immediately field it with my collection and I did try. It was strong, but since then I had 5 games with KO and still only 1 with Tzeentch. KO still got me into AoS and I lucked out that the options presented is what I wanted to do anyways. (E.g Field ironclad with escorts etc). Power is not a concern. Although I might still bring out to a small tournament if the mission format is favorable. Still my weakest army compare to Fyreslayers or Tzeentch so unlikely to get nerfed (other than the odd errata) and most likely get small buffs over time.
Still has more rewarding play than my other armies.
So far, i can see many agrees that:
KO is not a 5/0 nor a dominating battletome. More of B tier, 3-2 army.
KO has more "pre-built" options in the battletome (compare to previous no ship or 1 ship)
The current ruleset does not support transport garrisons very well. Probably see the improved 'Transport' system when Grotbag Scuttlers come out in 2-3 years or so...
I rather talk about what we ca do: with what we have; to deal with what's out there.