Reified generics aren't on the board, but a solution to:

> And as a consequence, C# can pack the value types directly in the generic data structure, instead of holding references to heap-allocated objects.

is what Project Valhalla is all about. (Java doesn't have a good reason for being able to do `new T` at the moment, but being able to treat a generic container as optimizable-over-structs is an explicit goal).