Slow, incremental improvement is not a killer feature. Compiled Python 10x faster. That would be killer. Proper multi-core concurrency. Killer. Modest (yet breaking) improvement over 6 years while all the action goes on in other languages? Not killer.
But you cite a very important point: all the improvement, modest as it is for the majority of users, is going to 3.x and yes, that's why I've moved. But I can tell you it's only because of the constant nagging and threats about abandoning 2.x. Nobody would have moved for any actual "feature" of 3 were it not for the fear of being abandoned. It's a stick-only strategy. No carrot.
But you cite a very important point: all the improvement, modest as it is for the majority of users, is going to 3.x and yes, that's why I've moved. But I can tell you it's only because of the constant nagging and threats about abandoning 2.x. Nobody would have moved for any actual "feature" of 3 were it not for the fear of being abandoned. It's a stick-only strategy. No carrot.