In a RTS type of game in which you setup an army and then do battles with this fixed army, what kind of game progression could there be? If I take total war for example, the progression happens in the campaign mode, but this campaign mode is almost a second game in itself. What do you think would make for interesting progression that is relatively straightforward to make? I wish to release a demo of my game soon so I can get some concrete feedback, but I have no means of making it a lengthy experience yet.

A level-select where you can retry levels you ve already beaten to get a better score ?