[jayd16]

Using reference types are more idiomatic in C#. To some degree they are less bug prone as well (they can be passed around without issue). Most of the core library use them instead of starting with value types and boxing.

The Task library has successfully added ValueTask but it took some doing. LINQ on the other hand can be replaced with unrolled loops or libraries more easily so the pressure just hasn't been there.

I could see something happening in the future but it would take a lot of be work.

[chris_pie]

To your point, ValueTask is less safe than Task. For example, it's important not to await it more than once.