I want a PC version for the feeling of near-immortality it gives to games. I can play Fate of Atlantis or even Last Crusade any time I want, but I can't do that with Emperor's Tomb unless I plug in my old Xbox or PS2. PS3's don't really have backwards compatibility, and the 360 BC for Emperor's Tomb isn't perfect.
Oh, wait, I can play it - I've got it for PC.
And if they don't bring out the Euphoria-enhanced 360 version, which was the reason The Force Unleashed never came to PC supposedly, there really is no excuse.