If this were real life and I were handling flight control for Coruscant (and yes, I know that real life and Star Wars have nothing to do with each other), I would have the incoming and outgoing ships arrive WAAAAY outsystem, like several AU outsystem, near Pluto (or the Coruscant equivalent). Yeah, that means a long sublight trip to the final destination, but there is a ton of space out there. Even with a hundred billion ships arriving and departing each day, the odds of collision that way would be greatly reduced.

Screenshot of daily commercial shipping. There's also 100,000+ commercial flights daily, passenger n cargo, not including military and private. Coruscant would be nuts.

Something that's interesting is that some of the worlds in the books have fairly small populations (not Coruscant) compared to Earth even though they are established worlds. That could make the traffic a bit less and closer to the world. I love the idea of the more crowded the world the farther out the approach if you are following the traffic rules. Of course you are always going to have players who don't want to mess with that and will jump in close to the planet regardless. And at that point you get all the hazards and all that goodness.