Would be great to have it as a feature -  I think you are probably closer to complete than many of the other features, including Python (https://fedoraproject.org/wiki/Releases/14/FeatureList).  I say go for it, it has to approved anyway (https://fedoraproject.org/wiki/Features/Policy/Proposals), and if you hit a major roadblock, it could slip if absolutely needed (though I really don't see this happening, seems to be 90% there already).  Great work pushing this forward, really looking forward to having a slightly more modern ruby available in fedora!

-j