I assume you're familiar with ATS? What don't you like about it?
I am familiar with ATS and I don't like that I am only familiar with it from the Language Shootout contest website. I haven't heard of it used in production, no blogs, no news on HN.
It is a bad excuse and rather sad but my main charge against it is that it is not popular enough.
[1] http://bluishcoder.co.nz/tags/ats/ [2] http://www.reddit.com/r/ATS/ [3] http://mmpool.bitparking.com