Contracts missing

[y-martini]

Hi!
I'm developing a route localization package(https://github.com/soluzione-software/laravel-localization/).
In order to be transparent for package users, I need to extend(by using $this->app->extend(...)) some basic services(\Illuminate\Routing\Redirector and some others).
Troubles comes where these services are used directly without a contract, see:

framework/src/Illuminate/Routing/Redirector.php

Line 33 in 8d83d7d

public function __construct(UrlGenerator $generator)

Can we consider removing(less preferred choice) Type declaration from constructor or methods and leave them only in php doc or implement some contracts(best choice)?
Thanks!

[y-martini]

@taylorotwell regarding #33547, should be created additional contract (\Illuminate\Contracts\Routing\Redirector)?