I want typed arrays.
I wish they'd fix a few bugs with as3.
Loading bars don't work with games which are all in the document class. You have to load every object on the 2nd frame to make the loading bar do anything. Maybe if they replaced the checkbox "Export in first frame" to a text box that asks you to enter a frame which you load everything on. Then you could just choose 2 and it would fix the problem.
Movie clips can't be accessed if you do a gotoAndStop() on the parent movieClip. For example, say there's a movie clip named Player_mc. And it has 2 frames with 2 movie clips on it named idle_mc and run_mc. If you did the code
Player_mc.gotoAndStop(2);
Player_mc.run_mc.play();
You would get an error saying, "Error, null object reference" <- or something along those lines.
You wonder to yourself, "But I changed it to the 2nd frame which contains the run_mc, how can it not find the run_mc? I know it's there." Well that's why it's a bug.