I think everything peaked with supreme commander forged alliance, and after the strategic zoom, i couldn't go back and play things like StarCraft without feeling like I was watching a genre defined by fighting the interface and hotkey mashing obsessives rather than playing the game or worrying about grand strategy. I know in all these games at the top levels you do have to worry eventually about hotkeys and commands, but after supreme commander on dual monitors, all the rest have been like viewing an art exhibit through a toilet roll.
These days there's barely a handful of games anymore in the RTS genre, and maybe publishers like paradox, will focus on longer running strategy, but nothing that quite meets that old feeling of sitting down for a 30 - 120 minute epic match of actual wits and thought and ability that supreme commander (and the C & C universe before it) contained. We lost something with the death of Westwood and when blizzard moved Warcraft from its roots, and no real successor to the old total annihilation, which is so sad considering how powerful computers have gotten in the meantime and how hard these games were pushing them back in the day.
(PS, if anyone can post me a working tute on getting SC:FA multiplayer working on Linux, I might sell you my firstborn).