I'm not Chad, but one of the big issues is this: Consider the trouble that some of us as developers have using Git and Gerrit. Now think about trying to get non-developer JS and CSS coders to be able to use Git and Gerrit, much less to *want* to use Git and Gerrit rather than torches and pitchforks.
I'm confused.. non-developers writing JS and CSS? This scares the bejesus outta me.