All of you guys seem to be missing the fact that this game will be launching about the same time the Steam Box starts rolling out to full release.
A shiny "Project Eternity, Big Screen, Full Controller Support" icon on it's sales page sure would do wonders for the games sales at that point. But maybe they don't really care about sales they get after the kickstarter.
I also really don't understand the hostility a lot of PC gamers have towards controllers. I am a PC gamer myself. I don't even intend to buy either of these next gen systems, but I enjoy playing games w/ a controller that allow me to lean back in my chair and prop my feet up. I don't understand how a pause-based strategic RPG is not the ideal kind of game for this play style. It's not a twitch FPS game where you have to hover over the screen for pixel precise kills in split seconds.
I'll be playing the game regardless, but I know a good number of friends that won't even have that option since they play all their PC games on a TV now and certainly they are alienating themselves from the SteamBox base. For the little amount of work this would take, it just seem really lacking in forsight not to include this feature when a huge PC push that is all about big screen play is coming out the same damn time as this game.