I use Python a lot and I combine it with C++ and Objective-C to build a very complex application. While it looks like a regular app and behaves like one, underneath it starts out as a Python interpreter that runs a script and loads compiled libraries. It's a model that works extremely well and I hope it continues to "just work". Sure, it's unconventional and I'd understand if Apple didn't expect most things to work this way, but I hope they don't just break it completely for me.