With the exception of stricter typing, these are problems of the new Flash runtime, not AS3 (even the ones labeled as AS3). As a language, AS3 is far superior t

With the exception of stricter typing, these are problems of the new Flash runtime, not AS3 (even the ones labeled as AS3). As a language, AS3 is far superior to its predecessors, but because of its simultaneous release with the new runtime the blame is often misplaced. As far as missing runtime features go, most of the points are very valid. Top of my list: sandboxing of external content and cloning movie clips (which would presumably be implemented in a cheaper way than just creating multiple instances).