> "Better-C" still has things many C-programmers wouldn't particularly like
I'd say a couple, not many.
> RAII
Who wouldn't like RAII?
> Metaprogramming
As a way to avoid preprocessor macros? Yes please.
> Nested functions
Already offered as extension.
> Member functions
I'm sure no C programmer would object to that.
> constructors, destructors
This yes. Agreed.
> operating overloading
Instead of _Generic()? Why not?