Let me remind you that the beautiful D programming language, is also 14 years old, and has not met a strong succes in everyday use yet. In my opinion you can't expect a newer generation language to be developed at the rate old languages were having, the justification for their development is precisely that older languages don't handle so well newer features in software design but they suffer the wide success (libraries etc.) of their predecessors and thus require more time to become usable.