More zero-initialization optimizations pending in std.experimental.allocator?

[Per Nordlöw via Digitalmars-d]

Now that

    https://github.com/dlang/phobos/pull/6411
has been merged and DMD stable soon has the new

    __traits(isZeroInit, T)

found here

    https://dlang.org/changelog/2.083.0.html#isZeroInit

are there more zero-initializations that can be optimized in 
std.experimental.allocator?