It would be nice if Spring Framework provided first-class support for web linking as defined by RFC-8288 for use in Spring MVC and WebFlux.
I'm aware that support for this exists within Spring HATEOAS (as I've used it extensively over the years) however it feels that a nice API for building Link
headers is a generally useful thing outside of just its use in Spring HATEOAS and could easily be a part of core web framework.
With more and more use cases that rely on Link
headers, such as Early Hints, I regularly find myself missing this in almost all projects I work on (that don't use Spring HATEOAS).