It’s certainly possible. I did it this way because I found the interface with two boxes to be very confusing. What happens if I enter into only one field, or what happens if I have two images, one portrait and one landscape. It’s possible to play with an app with this interface to try to figure out what it is going to do, but that’s more indicative of a bad design. So, if I were to add something like this, the interface would have to be very clear (and I don’t know what that would be).