I hardly see the rebuy screen - last time was a long time agoGuess I got gud. The instant reebuy screen may seem like an excellent point, but it's not - the only headcanonn I give myself to that is that Escape Capsules have this weird and wonderful Instant Journey Drive which whisks you back to wherever it was you left - I'm not particularly fond of it but that's what we have.
Personally I see the ejection seat as popping you out a few light seconds from the ship via a supercruise bubble, which collapses far enough away to no longer be relevant to the battle you were in or the asteroid field you crashed in - a one-time hop. You're then in RemLok and wait until the distress signal your seat sends is picked up and a GSAR ship picks you up and returns you to the station. You're checked out in Medical, sign the release forms, then grab a beer and wonder where it all went wrong for a while before getting your new ship
Obviously, all that boring stuff is cut out for the sake of gameplay, but in my headcanon that's what's happening.