The premiere 3D Space RTS couldn't be any more gorgeous and well-designed. True tactics as you fight it out.
It's a good thing that they ignored space being silent, because HW2 features not only fantastic sound effects, but a heartpounding and exotic soundtrack. More over, HW2 has an astounding number of mods, everything from Star Wars (its beautiful and allows you to pit the imperials vs the rebels in ways never thought possible) to Battlestar: Galactica (it's like watching the series, except you control the ships now).
I can only hope that someone, be it a group of people or another company, steps in and takes this concept, further polishing it and expanding its multiplayer aspect.
Cons:
Multiplayer action on a Mac is a downside, as it uses the GameRanger match-up feature, and few people play on it nowadays. Also, Macs cannot play against PCs. Even when Macs played against each other on my home network, the latency issues cause disconnects, and generally we couldn't get games of more than 3 players to work.