I have received a response from Jeffery Rosen on the matter:
Jeffrey Rosen
JUN 19, 2012 | 02:06PM PDT
Thanks Hamish, we are very aware of the petition. We will definitely be thinking about it.
In the meantime, if you guys have any specific concerns about the LIMBO builds, please send them our way as well, as while I know that the CodeWeavers builds are not ideal, I would definitely like to make sure they are as good as possible.
Jeffrey Rosen
Co-Founder
Humble Bundle