One thing at a time

I read the rules & cards of King of New York to see if it would be easy to make it after KOT.
Cards are very different, and some looks even more complicated to code than what exists in KOT. So I guess there is almost as much work to do if we want to make King of New York. But the game seems at least as fun as KOT, so I understand your wish, I hope it will be on BGA too
That being said, it's also linked to publisher's will. They could want to see KOT impact before wishing to add more of their games to BGA, and not stack all releases to give spotlight to each of them.
So I don't say I will never happen, but I don't think it will come in the next days