Many people have thought about this, IIRC it's not physically possible to build because there is a lane that goes under a bumper (which in real life they extend down quite a bit) https://files.catbox.moe/pnaeri.png
Assuming that it's about moving the ball unseen (which makes it much easier) from the sink hole higher on the table to the apparent ejection hole and kicker low on the table.
One could have the ball go quite low below the table surface and then use some kind of mechanical kicker to get it up to table level again near the bottom. It's possibly a unique problem, but seems to be much less work than building the rest of the table.
Or just have a different ball ready to come out of the exit hole, the top hole would swallow ball 1, and a different ball could exit after a realistic delay...
A bit like Star Trek teleportation.. is it you, or a copy of you?
Several real pinball tables do this, keep a hidden ball staged to make it seem to instantly reappear. The Rick & Morty machine in particular does this - you can shoot into a portal, and the ball (actually a different hidden one) reappears instantly some distance away.
Pop bumpers on an elevated/overlay playfield seems like a nightmare in general, maintenance would be a big pain. I can't think of a machine that has a pop like that, but my internal pinball database is getting pretty dusty.
You might be able to make the kickback lane work with a subway or maybe make the machine a widebody and go around the mess?
I think it's because the bumpers on top (the white things with the blue dot in the middle) need a lot of space underneath and the line runs through the space that they would need.
One could have the ball go quite low below the table surface and then use some kind of mechanical kicker to get it up to table level again near the bottom. It's possibly a unique problem, but seems to be much less work than building the rest of the table.