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

[Per Nordlöw]

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?