Can you share what aspects of the design you (and Stroustroup) aren't happy with? Stroustroup has a tendency of being proven right, with 1-3 decade lag.

Certainly we can say that Bjarne will insist he was right decades later. We can't necessarily guess - at the time - what it is he will have "always" believed decades later though.

Well thats not always true. Initializer list is a glaring example. So are integer promotion some other things like