Really good read. Interestingly, there's a real renaissance in general face-to-face boardgames at the moment, with creative designers focussing on creating something that is fun to play with another person/group, something you can't do in a solo computer experience. Whereas a group may want to create a shared story, explore games mechanics or tackle an interesting strategic problem, it be that the wargamer is after something slightly different.
I remember playing Columbia's Hammer of Scots a number of years ago with a friend, and later playing a computer version of it. The computer version had all the same mechanics, but absolutely none of the tension and emotions you get when you are playing a human opponent. For board wargames, that's the bit you should double down in.
I think there is a place for board wargames, but it's not going to be able to compete with the realism in computer game engines. And as someone who took time to learn ASL back in the day - nor should it....the strength of board wargames would be in tackling an abstract problems in a fun and quick-to-learn format - making for an intriguing game rather than hyper-realistic.