I’m completely in favor of this. Note that some extensions are broken due to hackish way the upstream extension developers try to hook in some place.
However, there is no reason any extension to be broken in the ubuntu session. Mind that it means that the Dock and appindicators will always be present, that’s the only difference.
So, the goal would be maybe contact them to see why there extension is broken in this session (I’m happy to help debugging once we are closer to the release, I have too many things due to until the end of March, at least)?
(I think this should be a separate thread though.)