An interesting OW 1 Armored Korps list I've been playing

You know I love me some old witch, but i think one of her biggest issues is WJP. When this is coupled with an already expensive theme I think her lists in armor corps begin to suffer. The list seems very low model count, which is great for the opponent, it's much easier to deal with. Possibly a different jack load out and swapping A+H for raagman could work.

I get a similar feeling in my WGK lists with OW1, but those are cheap units and can make up for some of her shortcomings.

Never said it was the best list! But you are correct in assuming that the basic win condition here is a little scatterbrained. Perhaps to it's detriment. I've played 9 games with it so far, and usually they will go down:

Turn 1:
-Advance move the Shockies/Bombardiers forward with the bombardiers near a close zone if there are any.
-Run everything forward turn 1 with the help of the kovniks. Put Scrapjack somewhere useful, maybe Unseen path up if it's safe - hand out upkeeps as required.

Turn 2:
-Depending on what the opponent has, run or shield wall shock troopers forward (watch for jacks/beasts or multiwound infantry immune to knockdown) but be fairly aggressive, assaulting is also an option if the opponent has been aggressive and allowed it.
-Pop Old Witch feat and/or place murder of crows to deny charges (cover as much of the infantry as possible, use murder of crows to zone if you need to), this turn is tight on focus, but if you didn't have to wait until this turn to feat, you can often get Avatar of Slaughter up (who you give it to will depend on enemy composition)
-walk the bombardiers and shoot if something is in range

From here on out the rest of your game will depend on how your opponent reacts to this / the overall board state. In most case, you have some options, the main gameplan is to keep your opponent on their back foot and lock your them out of the scenario. Old Witch being Old Witch, assassination runs are always on the board if scrappy is alive and your opponent gets careless as well.

On the subject of Aiyana and Holt, I agree that they probably don't actually need to be there, and may be phased out as more models become available to me... I'd actually really like to phase either Atannas or some Demo Corps in once Dragos becomes available, but for the time being I am still paranoid about dealing with things that require magic weapons to deal with. There are is quite a lot of that floating around here. I am also not convinced the Spriggan is absolutely... but that is another story.