If you haven't done any design/development for iPad, it is a very different experience from that of the iPhone. I think Jack does a pretty good job of explaining that difference here. You really can't approach it with the mindset of "Just scale everything up!"

> When I go the ‘My Trips’ tab I’m hit with marketing modules telling me about fare specials and the glory of the Delta Sky Club. These have nothing to do with My Trips.

Although I agree that it feels like they originated in the marketing department, I don't agree that they have nothing to do with My Trips. If you don't have any trips, you would need to book one to interact with that section of the app. Fare specials serve as a call-to-action to do that. Also, note that these modules change based on the logged in user.

There are far better examples of "filling space for the sake of filling space" in the store.

Disclosure: I know the team that worked on the app; I worked on its iPhone counterpart.