Agreed, though that NW quadrant and even the SE quadrant could perhaps just accomodate a 270 degree loop - see the size of the loops at nearby N2J12 cloverleaf.
I hadn't noticed that one (N2J15).Indeed, if you look at the next junction along, which also seems to be futureproofed for a stackamond, one left turn takes up a vast amount of space: https://www.google.co.uk/maps/@-33.9607 ... a=!3m1!1e3
Yes, interesting. In fact even the first one that I posted on, N2J14, has that potential, to the north and to the south, to conflate 3 adjacent junctions. Like Kliprivier Drive, though not exactly 'C/Ds'. Rather Texas-ish ... ?There's yet another futureproofed stackamond in CT which seems to be in the Kliprivier Dr format with C/D lanes for the next junction:
https://www.google.co.uk/maps/@-33.8857 ... a=!3m1!1e3
Looking at all four examples now, I think there was, and is, no vision for free-flowing right turns.
I'm rather fascinated that these all exist in Suid Afrika. So, not as rare and unusual as I thought. SA, like me, must rate them highly, though only one of the four is currently a true stackamond.
Are there more?