NA is obviously missing. But even 4th edition is not fully supported.
A lot of the checking is complex to implement and often decided to be not useful enough and are hence marked as low priority.
Things like aircraft carrier landing sounds trivial but is quite complex to implement.
House rules are not a priority. Last time I talked to Sean he wanted Europe and Pacific support first.
Funny thing is without flexibility for coding of house rules, Europe and Pacific support won’t be easy to add.
Oh and the AI. Discussion occasionally pops up. All kinda of obvious improvements. Everyone is excited. But then it dies done before anything is done.
We have developers at tripleA forum. We have players here.
I’ll try to show you the current AI script. Been posted many times at tripleA forum.