This not a suggestion at all, just a curiosity.
Some games, when you save, transparently saves the game with steam, so when you log in on another pc, you get the very same saves you had before. This works for some games that has both steam and non-steam version, so it's not all or nothing proposition.
This means that in theory AI War and AVWW could have an ability to save to steam cloud. Question to Chris, why not? I'm sure there is a good reason, just would be curious what it is.