It is a struggle though to get the improvements through the committee. Especially the C++ folks from the Clang side fight very hard against it, this is - for example - why we not have forward declarations where I already had weak consensus, but the clang area team made it clear they will never implement it.
But C and C++ do have forward declarations [1]... can you elaborate on what exactly you were trying to promote that was rejected?
[1] : https://en.wikipedia.org/wiki/Forward_declaration