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
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.
A bit like Star Trek teleportation.. is it you, or a copy of you?
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?
The kickback puts the ball into the left orbit, which is at ground level, the ball will hit the spinner and then IIRC cause it's outside the crop, it goes into the lanes at the top of the playfield, and into the pop bumper area there.