I asked the question of US ATCOs regarding a departure and arrival.
In areas of non-surveillance they keep one on the ground until the inbound has landed or cancelled IFR before they give the departure a clearance on the ground (with void times). We have a lot less surveillance than they do.
Copy/paste doesn't work. Do people who are actually in the industry ( Like RPT and GA pilots who go regional) want E to the ground and get rid of G?