Well, as some of us are missing the 'old days' of RTS, before the whole 3D idea jumped in and ruined half of it, theres still hope for the people there.
SunAge would be the thing for you, it's released but currently having a bit issues and still is in work by the dev team, however unlike many other game entertainments, these guys actually talk directly to the players and let them know what their doing and such, really nice guys and actually a pretty damn fun game once you've gotten into it.
So, if you want that old, classic starcraft feeling back, heres my find.