Funny thing is that CMO has been discontinued by Matrix Games, as has the Harpoon bundle.I read your blog post (above) ... and totally I understand !
Since you are a Harpoon fan you might consider a VERY similar game made in (this century) with an excellent game database called: Command Modern Operations. I have been playing this game for years and I own all the DLC for it. ... and it just happens to be ON SALE right now for 50% off.
If you are interested in Harpoon, here is a great article from a couple of years ago discussing its history.