AA is and but should also preserve Gigs. The realism, dense story, the "middle" feeling and the powerful editor looking for Operation Flashpoint none.
Especially the latter has a chance yet to get the game for years alive.
The multiplayer will offer great battles and skirmishes and all vehicles and weapons use from the singleplayer. OFP was indeed made by the mods and a good multiplayer game, but AA may make it even much better.
Whether this succeeds is November 10. Then Armed Assault to appear