I have experience with both MMF and iOS devolopement. I haven't used MMF in years and was surprised to see the 2 have come together! I went ahead and got the iOS exporter and had some questions for anyone who knows.

When I developed universal apps in the past I would have dynamic resolutions for all 3 device types with 2 sets of artwork. I would have art for the low res screen and the same art, twice the size for the retina display and ipad.

I noticed with the exporter I can choose only one resolution and the runtime scales it down on smaller devices. Can I have dynamic resolutions? I don't like the bars on the ipad for example.

Does the exporter make smaller art files automatically? I don't like the idea of an 'HD' sprite being loaded on the 3GS for memory reasons.

If these are not supported, is there an easy way to do it in Xcode after the project files have been made?