This great strategy board game would be a perfect fit for iOS (hopefully on iPhone too, not just iPad), especially if it tied in with the online version at their website, so we could play online against those folks. Surely Days of Wonder is on it. Right? Right?
I'd buy the game in a heartbeat. Seems like it would be a no brainer like you said, especially with Catan, Carcassone, Samurai, Labyrinth, etc. already on iOS. And there's already the Ticket to Ride game on the Xbox 360. But who knows?
Not sure I'd bank on this part, given the massive resources they are poring into getting Memoir '44 Online up and running. But I agree: TTR on an iDevice would be a wonderful development. First-day purchase for me.