Hi there !
Though this might sound weird, I am an happy 2014 mobile Air developer, ;) but since Adobe did not update the tool I use for developement (Flash Builder 4.7) in 3 years, I am seriously considering switching to IntelliJ. I downloaded the demo version and I must say that I am amazed by the product. It lacks only one thing, and it will prevent me from buying it and stick to Flash Builder if I can't reproduce it. I am talking about the Flash Builder option named "clear application data" in the debug profile settings, allowing to get rid of the local files created by the last debug iteration on device or emulator, and I can't see it in IntelliJ (see image below) :
This thing is mandatory to develop mobile apps, since it's a pain to manually remove those file on each debug.
Any idea or advice on this ? Thanks !