Thanks for making the link our post on this topic.
And to answer your question on what has changed: We thought further about this topic, in particular how to balance the wish from many developers to enable canister-controlled neurons (enabling many interesting uses cases) vs how to still prevent deep neuron markets (which could be used for a voting attack). The preliminary conclusion, outlined above, was essentially to allow canister-controlled neurons (which are transferable), balanced by incentives giving higher rewards to neurons which are not transferable (so that not too many neuron become transferable).