Voting starts in March for the Drupal Association Board election.
Drupal core is inbetween using paths and routes for things, but moving towards routes and route parameters. Entities are still stuck somewhere between the two with 'route_base_path' and uri() methods, while work is ongoing to change the links to routes instead (see).
Figure out the best way for entities to provide routes and route parameters themselves instead of uri()s directly to match with Drupal 8's route based reality.
User interface changes
Likely uri() may go away and new methods may be added.