If we use has.js we can deprecate comment blocks.
It wouldn't be too difficult to use and it's probably a good idea.
For this we would need a 1.5, because it would break the comment blocks for those who are using it and it wouldn't be backward compatible.
Well, we'd have to keep the comment blocks as I mentioned in the issue description to keep 'em. This way we could release it in 1.4.2, instead of waiting for 1.5.
As a note, this also implies work on the website.