Maps do not allow users to declare the order in which their endpoints are registered against our routers, which can force developers to compromise how their URIs are constructed or even force users to build custom router implementations.

By switching to an array, users will be allowed to declare the order in which routes will be registered. Long term goal here is to eventually open up a path for us to remove any custom routing options in the future and purely rely on gorilla/mux.

I haven't figured out exactly what this API will look like, but I hope the change to be simple enough that minimal refactoring is required for the upgrade.