One disagreement. You discount the Realtime market for electricity as a nearterm solution to intermittency, apparently on popularity grounds.

I saw a discussion on TV from some conference in Seattle recently and one utility guy seemed to be contending that the way you deal with intermittency is you simply change the price on a minute by minute basis. When the wind is blowing you buy your electricity dirt cheap, when the wind is not blowing and the sun is not shining then you pay through the nose.

I guess that's one approach, although not one that is likely to be too popular

You need to revisit your incorrect assumptions, whatever they may be. Modern digital control and communications technology can make all this operate invisibly in the background for you. It can be done cheaply (eg. <$5 / month / point) and be repaid by giving every customer direct access to the wholesale electrical market, where electricity sells on average for less than half what retail customers pay and in off-peak hours could charge your EV essentially for no noticable cost, eg. <$0.01 / kwh.

That system is the real fix for intermittent renewables.