I wonder how much House preference is governed by one's first exposure to the fictional world. In my case it was the novel 'Heir to the Dragon' and ever since then, despite its flaws, I have been partial to the Draconis Combine. The Federated Suns is ok too, though not the Federated Commonwealth.
I dislike the Clans. I would be perfectly happy if their "free to play, pay for 'something'" model turned out to be "free to play Inner Sphere, pay to play Clans".
Not that I'd have any problem paying for the game if it turns out well.