Are you going to mix all those languages into one project and somehow use their advantages but steer away from their disadvantages?

Sure, other languages have caught up or have improved on some of the features where C shines.

Let's remove portability and integration from the feature list, because that's strongly related to C's tenure.

Which one of the languages you listed matches the rest of the feature set I brought up?

  * Small language
  * Fast compile times
  * Fast binaries
  * Small binaries
  * Great debugging experience
  * Close to the metal

In my opinion, they all fail in at least one category, and that's expected - additional functionality can't come for free. You can only accept its cost.