Less is More - What Modules, Features, or APIs Should We Cut From Core?

There are unmaintained modules and even subsystems in core. Now what?

Do we have a hit list to remove by Drupal 9?

Are any of those essential and need to be brought back to life?

Will you cry if the color module is kicked out of core?

When was the last time you enabled forum module on a site?

Let's talk about the maintainability of Drupal core, lessons learned after Drupal 8's release, and whether core and some modules would be better off parting ways.